v2.4.0.8
Document And Entity Information (USD $)
12 Months Ended
Dec. 31, 2014
Jun. 30, 2014
Feb. 27, 2015
Common Class A [Member]
Feb. 27, 2015
Common Stock [Member]
Document Information [Line Items]        
Entity Registrant Name GRAY TELEVISION INC      
Document Type 10-K      
Current Fiscal Year End Date --12-31      
Entity Common Stock, Shares Outstanding     6,185,819 52,617,415
Entity Public Float   $ 661,393,998    
Amendment Flag false      
Entity Central Index Key 0000043196      
Entity Current Reporting Status Yes      
Entity Voluntary Filers No      
Entity Filer Category Accelerated Filer      
Entity Well-known Seasoned Issuer No      
Document Period End Date Dec. 31, 2014      
Document Fiscal Year Focus 2014      
Document Fiscal Period Focus FY