NOTES PAYABLE - NARRATIVE (Details)												1 Months Ended				3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 31, 2018 USD ($)	Nov. 15, 2017 USD ($)	Nov. 09, 2017 USD ($)	Nov. 07, 2017 USD ($)	Nov. 01, 2017 USD ($) shares	Oct. 13, 2017 USD ($)	Jul. 10, 2017 USD ($)	Jul. 01, 2017 USD ($)	Jul. 14, 2016 USD ($) shares	Oct. 17, 2013 USD ($)	Feb. 28, 2013 USD ($)	Nov. 30, 2017 USD ($)	Jul. 31, 2016 USD ($)	Apr. 30, 2015 USD ($)	Oct. 31, 2013 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 29, 2017 USD ($) shares	Mar. 31, 2017 USD ($)	May 31, 2016 USD ($)	Apr. 29, 2015 USD ($)
Line of Credit Facility [Line Items]
Restricted cash																$ 1,000,000		$ 1,000,000				$ 1,000,000
Payment for debt extinguishment																		17,600,000
Converted instrument, shares issued (in shares) | shares																3,536,783
Gain (loss) on extinguishment of debt																				$ 900,000
Debt conversion expense and loss on extinguishment of notes payable																$ 1,299,000	$ 1,099,000	4,504,000	$ 1,099,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity																40,211,000		40,211,000
Long-term line of credit																$ 2,961,000		$ 2,961,000				8,634,000
Second Secured Lien Notes
Line of Credit Facility [Line Items]
Outstanding warrants (in shares) | shares																206,768		206,768
Prospect Loan
Line of Credit Facility [Line Items]
Restricted cash																$ 1,000,000		$ 1,000,000				1,000,000
Convertible Debt
Line of Credit Facility [Line Items]
Converted instrument, shares issued (in shares) | shares					2,221,457
Repayments of convertible debt				$ 500,000	$ 17,100,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Remaining borrowing capacity																				0
LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate																		1.69%
Bison Note Payable
Line of Credit Facility [Line Items]
Debt face amount																					$ 10,000,000
Outstanding warrants (in shares) | shares																					1,400,000
Debt interest rate, stated rate																					5.00%
2013 Notes | Senior Notes
Line of Credit Facility [Line Items]
Debt interest rate, stated rate															9.00%
Debt conversion original debt amount															$ 5,000,000
Number of securities called by warrants (in shares) | shares															150,000
Discount on debt instrument															$ 1,600,000
2013 Notes | Senior Notes | Board of the Director
Line of Credit Facility [Line Items]
Debt conversion original debt amount															$ 500,000
Convertible Notes | Convertible Debt
Line of Credit Facility [Line Items]
Debt face amount																								$ 64,000,000.0
Debt interest rate, stated rate																								5.50%
Percent of total outstanding							99.00%
Cinedigm Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity										$ 55,000,000.0
Cinedigm Credit Agreement | Term Loans
Line of Credit Facility [Line Items]
Maximum borrowing capacity										25,000,000.0
Cinedigm Credit Agreement | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity										$ 30,000,000.0
Cinedigm Credit Agreement | Base Rate | Term Loans
Line of Credit Facility [Line Items]
Basis spread on variable rate										5.00%
Cinedigm Credit Agreement | Base Rate | Revolving Credit Facility
Line of Credit Facility [Line Items]
Variable rate basis percent										6.25%
Cinedigm Credit Agreement | Eurodollar
Line of Credit Facility [Line Items]
Basis spread on variable rate										4.00%
Cinedigm Credit Agreement | Eurodollar | Term Loans
Line of Credit Facility [Line Items]
Basis spread on variable rate										6.00%
Cinedigm Credit Agreement | Eurodollar | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate										4.00%
Variable rate basis percent										1.00%
Cinedigm Credit Agreement | Federal Funds Effective Swap Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate										0.50%
Basis percentage of nations largest banks										75.00%
Exchange Agreement | Convertible Debt | Class A common stock
Line of Credit Facility [Line Items]
Debt conversion original debt amount							$ 50,600,000
Second Lien Loans
Line of Credit Facility [Line Items]
Debt face amount																1,500,000.0		$ 1,500,000.0
Second Secured Lien Notes
Line of Credit Facility [Line Items]
Debt interest rate, stated rate									12.75%
Second Secured Lien Notes | Secured Debt
Line of Credit Facility [Line Items]
Debt face amount									$ 15,000,000
Debt interest rate, stated rate									7.50%
Proceeds from secured notes payable																		1,500,000
Number of shares to be issued for every 1 Million borrowed (in shares) | shares									98,000
Second Secured Lien Notes | Payment in Kind (PIK) Note
Line of Credit Facility [Line Items]
Debt interest rate, stated rate									5.25%
Loan Agreement | Secured Debt
Line of Credit Facility [Line Items]
Proceeds from secured notes payable																		10,500,000
Cinedigm Revolving Loans | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity										$ 30,000,000.0
Cinedigm Revolving Loans | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity												$ 11,800,000								$ 2,232,000.000
Debt service coverage ratio												1.25
Line of credit minimum liquidity												$ 800,000		$ 5,000,000.0
Maximum borrowing capacity, reduction amount												$ 2,000,000
Cinedigm Revolving Loans | LIBOR | Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt variable rate basis floor														1.00%
Cinedigm Revolving Loans | Base Rate | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate														3.00%
Debt variable rate basis floor														1.00%
Cinedigm Revolving Loans | Eurodollar | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate														4.00%
Cinedigm Revolving Loans, May 2016 Amendment | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity																							$ 22,000,000.0
Credit Agreement Amendment Number 4 | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity													$ 17,100,000				$ 22,000,000		$ 22,000,000
Line of credit minimum liquidity		$ 5,000,000	$ 800,000			$ 800,000		$ 5,000,000										800,000
Maximum borrowing capacity, reduction amount			$ 2,000,000
Credit Agreement Amendment Number 4 | Base Rate | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate													3.50%
Credit Agreement Amendment Number 4 | Eurodollar | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate													4.50%
Prospect Loan
Line of Credit Facility [Line Items]
Debt face amount											$ 70,000,000					$ 70,000,000		$ 70,000,000				$ 70,000,000
Basis spread on variable rate											9.00%
Debt interest rate, stated rate											2.50%
Prospect Loan | Debt Instrument, Prepayment Period - Between Second And Third Anniversary
Line of Credit Facility [Line Items]
Prepayment premium											5.00%
Prospect Loan | Debt Instrument, Prepayment Period - Between Third and Fourth Anniversary
Line of Credit Facility [Line Items]
Prepayment premium											4.00%
Prospect Loan | Debt Instrument, Prepayment Period - Between Fourth and Fifth Anniversary
Line of Credit Facility [Line Items]
Prepayment premium											3.00%
Prospect Loan | Debt Instrument, Prepayment Period - Between Fifth and Sixth Anniversary
Line of Credit Facility [Line Items]
Prepayment premium											2.00%
Prospect Loan | Debt Instrument, Prepayment Period - Between Sixth and Seventh Anniversary
Line of Credit Facility [Line Items]
Prepayment premium											1.00%
Prospect Loan | LIBOR
Line of Credit Facility [Line Items]
Debt variable rate basis floor											2.00%
Subsequent Event | Cinedigm Revolving Loans | Revolving Credit Facility
Line of Credit Facility [Line Items]
Repayments of long-term lines of credit	$ 2,000,000
Long-term line of credit	$ 9,800,000