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STOCKHOLDERS' DEFICIT - OPTIONS GRANTED OUTSIDE CINEDIGM'S EQUITY INCENTIVE PLAN (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Oct. 31, 2013
employee
$ / shares
shares
Dec. 31, 2010
$ / shares
shares
Sep. 30, 2016
shares
Sep. 30, 2017
shares
Sep. 30, 2016
shares
Class of Stock [Line Items]          
Shares under option, granted (shares)     0 0 0
Class A common stock | Chief Executive Officer          
Class of Stock [Line Items]          
Options exercise price range, lower (in dollars per share) | $ / shares   $ 15.0      
Options exercise price range, upper (in dollars per share) | $ / shares   $ 50.0      
Class A common stock | Chief Executive Officer | Stock option          
Class of Stock [Line Items]          
Number of shares authorized (shares)   450,000      
Gaiam Americas, Inc. and Gaiam, Inc. (GVE)          
Class of Stock [Line Items]          
Number of employees joining company following acquisition | employee 10        
Shares under option, granted (shares) 62,000        
Weighted average exercise price per share, granted (in dollars per share) | $ / shares $ 17.50        
Options nonvested (shares)       31,875  
Gaiam Americas, Inc. and Gaiam, Inc. (GVE) | Stock option          
Class of Stock [Line Items]          
Award vesting rights percentage 25.00%        
Award vesting period 4 years        
Aware expiration period 10 years