| 06 Nov 2025 | Quarterly Results | - | 
                                    
                                        
                                            | 05 Aug 2025 | Quarterly Results | - | 
                                    
                                        
                                            | 15 May 2025 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 06 Feb 2025 | Quarterly Results | - | 
                                    
                                        
                                            | 07 Nov 2024 | Quarterly Results | - | 
                                    
                                        
                                            | 06 Aug 2024 | Quarterly Results | - | 
                                    
                                        
                                            | 15 May 2024 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 08 Feb 2024 | Quarterly Results | - | 
                                    
                                        
                                            | 09 Nov 2023 | Quarterly Results | - | 
                                    
                                        
                                            | 10 Aug 2023 | Quarterly Results | - | 
                                    
                                        
                                            | 26 May 2023 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 08 Feb 2023 | Quarterly Results | - | 
                                    
                                        
                                            | 08 Nov 2022 | Quarterly Results | - | 
                                    
                                        
                                            | 09 Aug 2022 | Quarterly Results | - | 
                                    
                                        
                                            | 11 May 2022 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 08 Feb 2022 | Quarterly Results | - | 
                                    
                                        
                                            | 09 Nov 2021 | Quarterly Results | - | 
                                    
                                        
                                            | 05 Aug 2021 | Quarterly Results | - | 
                                    
                                        
                                            | 28 May 2021 | Audited Results & Final Dividend | - | 
                                    
                                        
                                            | 11 Feb 2021 | Quarterly Results | - | 
                                    
                                        
                                            | 30 Dec 2020 | Issue Of Warrants | To consider and approve  issue of warrants to Promoters/Promoter Group on Preferential basis. | 
                                    
                                        
                                            | 10 Nov 2020 | Quarterly Results | - | 
                                    
                                        
                                            | 12 Aug 2020 | Quarterly Results | - | 
                                    
                                        
                                            | 29 May 2020 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 07 Feb 2020 | Quarterly Results | - | 
                                    
                                        
                                            | 05 Nov 2019 | Quarterly Results | - | 
                                    
                                        
                                            | 09 Aug 2019 | Quarterly Results | - | 
                                    
                                        
                                            | 24 May 2019 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 12 Feb 2019 | Quarterly Results | - | 
                                    
                                        
                                            | 13 Nov 2018 | Quarterly Results | - | 
                                    
                                        
                                            | 10 Aug 2018 | Quarterly Results | - | 
                                    
                                        
                                            | 24 May 2018 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 14 Feb 2018 | Quarterly Results | - | 
                                    
                                        
                                            | 13 Dec 2017 | To consider raising of funds | - | 
                                    
                                        
                                            | 14 Nov 2017 | Quarterly Results | - | 
                                    
                                        
                                            | 08 Aug 2017 | Quarterly Results | - | 
                                    
                                        
                                            | 23 May 2017 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 09 Feb 2017 | Quarterly Results | - | 
                                    
                                        
                                            | 09 Nov 2016 | Quarterly Results | - | 
                                    
                                        
                                            | 12 Aug 2016 | Quarterly Results | - | 
                                    
                                        
                                            | 24 May 2016 | Audited Results & Dividend | 1. Appointment of Dr. A. S. Durga Prasad as an Independent Director of the Company w.e.f. May 24, 2016. 2. Re-appointment of Sri A V N Raju, Wholetime Director of the Company for 5 years. | 
                                    
                                        
                                            | 11 Feb 2016 | Quarterly Results | - | 
                                    
                                        
                                            | 10 Nov 2015 | Quarterly Results | - | 
                                    
                                        
                                            | 30 Jul 2015 | Quarterly Results | - | 
                                    
                                        
                                            | 14 May 2015 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 11 Feb 2015 | Quarterly Results | - | 
                                    
                                        
                                            | 13 Nov 2014 | Quarterly Results | - | 
                                    
                                        
                                            | 13 Aug 2014 | Quarterly Results | - | 
                                    
                                        
                                            | 15 May 2014 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 09 Apr 2014 | Rights Issue | To consider & approve the proposal of raising of funds by issue of Equity Shares on Rights basis or by any other permissible means. | 
                                    
                                        
                                            | 12 Feb 2014 | Quarterly Results | - | 
                                    
                                        
                                            | 12 Nov 2013 | Quarterly Results | - | 
                                    
                                        
                                            | 07 Aug 2013 | Quarterly Results | - | 
                                    
                                        
                                            | 22 May 2013 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 08 Feb 2013 | Quarterly Results | - | 
                                    
                                        
                                            | 08 Nov 2012 | Quarterly Results | - | 
                                    
                                        
                                            | 09 Aug 2012 | Quarterly Results | - | 
                                    
                                        
                                            | 29 May 2012 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 06 Feb 2012 | Quarterly Results | - | 
                                    
                                        
                                            | 04 Nov 2011 | Quarterly Results & Others | For shiting of the registered office of the Company from 41, Nagarjuna Hills, Punjagutta, Hyderabad-500082 to "NCC House", Madhapur, Hyderabad-500081 with effect from December 01, 2011. | 
                                    
                                        
                                            | 12 Aug 2011 | Quarterly Results | - | 
                                    
                                        
                                            | 30 May 2011 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 04 Feb 2011 | Quarterly Results | - | 
                                    
                                        
                                            | 10 Nov 2010 | Quarterly Results | - | 
                                    
                                        
                                            | 10 Aug 2010 | Quarterly Results | - | 
                                    
                                        
                                            | 25 May 2010 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 27 Jan 2010 | Quarterly Results | - | 
                                    
                                        
                                            | 31 Oct 2009 | Quarterly Results | - | 
                                    
                                        
                                            | 30 Jul 2009 | Quarterly Results | - | 
                                    
                                        
                                            | 29 Jun 2009 | To consider issue of Equity Shares | For issue of Equity Shares / Securities to the QIB's through QIP under Chapter XIIIA of the SEBI (DIP) Guidelines, 2000, for an amount not exceeding Rs 550 Crs. | 
                                    
                                        
                                            | 28 May 2009 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 27 Jan 2009 | Quarterly Results & Others | To consider issue of 1000 Secured Redeemable Non-Convertible Debentures of Rs 10.00 lakhs aggregating to Rs 100 crores to LIC of India & to accept the resignation of Prof. V S Raju, Director. | 
                                    
                                        
                                            | 27 Oct 2008 | Quarterly Results | - | 
                                    
                                        
                                            | 31 Jul 2008 | Quarterly Results | - | 
                                    
                                        
                                            | 30 May 2008 | Audited Results & Dividend | - | 
                                    
                                        
                                            | 31 Jan 2008 | Quarterly Results | - | 
                                    
                                        
                                            | 31 Oct 2007 | Quarterly Results | - | 
                                    
                                        
                                            | 30 Jul 2007 | Quarterly Results | - | 
                                    
                                        
                                            | 28 May 2007 | Audited Results & Final Dividend | - | 
                                    
                                        
                                            | 21 Mar 2007 | Interim Dividend | - | 
                                    
                                        
                                            | 31 Jan 2007 | Quarterly Results & Others | To consider  inprinciple approval for raising of funds by issue of Equity Shares to QIBs (Qualified Institutional Buyers) under the QIP guidelines. | 
                                    
                                        
                                            | 30 Oct 2006 | Quarterly Results | - | 
                                    
                                        
                                            | 31 Jul 2006 | Quarterly Results | - | 
                                    
                                        
                                            | 29 May 2006 | Accounts, Dividend & Bonus issue | - | 
                                    
                                        
                                            | 28 Jan 2006 | Quarterly Results | - | 
                                    
                                        
                                            | 05 Jan 2006 | Approval for allotment of Equity Shares | Approval for allotment of 2,935,420 Equity Shares underlying the Global Depository Receipts under the Green Shoe Option facility exercised by the Lead Managers to the GDR issue. | 
                                    
                                        
                                            | 29 Oct 2005 | Quarterly Results | - | 
                                    
                                        
                                            | 08 Sep 2005 | To consider raising of funds | - | 
                                    
                                        
                                            | 30 Jul 2005 | Quarterly Results | - | 
                                    
                                        
                                            | 16 May 2005 | Accounts, Dividend & Stock Split | - | 
                                    
                                        
                                            | 31 Jan 2005 | Quarterly Results | - | 
                                    
                                        
                                            | 01 Dec 2004 | Others | Approved allotment of 29,50,000 equity shares of Rs.10/-each at a premium of Rs.268/-per share and 10,00,000 warrants of Rs.278/-each with an option to convert the same into equity shares. | 
                                    
                                        
                                            | 20 Oct 2004 | Quarterly Results & Others | Preferential Issue of shares, for considering & according in principle approval for raising upto Rs.120 crores by issue of eq. shares/securities/warrants on preferential basis to select investors. | 
                                    
                                        
                                            | 31 Jul 2004 | Quarterly Results | - | 
                                    
                                        
                                            | 19 Jun 2004 | Accounts & Dividend | - | 
                                    
                                        
                                            | 28 Jan 2004 | Quarterly Results | - | 
                                    
                                        
                                            | 05 Jan 2004 | Preferential Issue of shares | to select group of individuals/corporates/institutions and also share warrants on preferential basis to the promoters. | 
                                    
                                        
                                            | 29 Oct 2003 | Quarterly Results | - | 
                                    
                                        
                                            | 31 Jul 2003 | Quarterly Results | - | 
                                    
                                        
                                            | 30 Jan 2003 | Quarterly Results | - |