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NOTES PAYABLE - NARRATIVE (Details) - USD ($)										1 Months Ended				3 Months Ended		4 Months Ended	6 Months Ended		12 Months Ended
	Nov. 15, 2017	Nov. 09, 2017	Nov. 01, 2017	Oct. 13, 2017	Jul. 01, 2017	Jul. 14, 2016	Apr. 29, 2015	Oct. 17, 2013	Feb. 28, 2013	Aug. 14, 2017	Jul. 31, 2016	Apr. 30, 2015	Oct. 31, 2013	Sep. 30, 2017	Sep. 30, 2016	Nov. 01, 2017	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2016	Nov. 14, 2017	Nov. 13, 2017	Jul. 10, 2017	Mar. 31, 2017	May 31, 2016
Line of Credit Facility [Line Items]
Restricted cash														$ 1,000,000			$ 1,000,000						$ 1,000,000
Proceeds from issuance of unsecured debt																	1,462,000	$ 0
Interest expense														$ 3,975,000	$ 5,111,000		8,016,000	10,046,000
Converted instrument, shares issued (in shares)														1,315,326
Induced conversion of convertible debt expense														$ 3,100,000
Gain (loss) on extinguishment of debt														(100,000)					$ 900,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity														40,211,000			40,211,000
Long-term Debt | Class A common stock
Line of Credit Facility [Line Items]
Treasury stock, shares acquired (shares)							272,100
Treasury stock acquired							$ 2,700,000
Forward Contracts | Class A common stock
Line of Credit Facility [Line Items]
Forward contract indexed							11,400,000
Indexed shares (in shares)																							1,179,138
Prospect Loan
Line of Credit Facility [Line Items]
Restricted cash														1,000,000	1,000,000		$ 1,000,000	1,000,000
Convertible Debt | Subsequent Event
Line of Credit Facility [Line Items]
Converted instrument, shares issued (in shares)			2,221,457													3,536,783
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																	1.00%
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)													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%
Debt conversion ratio							$ 1,000
Debt conversion ratio							82.4572
Debt conversion price (in dollars per share)							$ 12.13
Debt repurchase price percentage							100.00%
Debt redemption price percentage							100.00%
Proceeds from issuance of unsecured debt							$ 60,900,000
Interest expense														700,000	900,000		$ 1,400,000	1,800,000
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 | Subsequent Event
Line of Credit Facility [Line Items]
Maximum borrowing capacity																				$ 11,800,000.0	$ 17,100,000.0
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 | Line of Credit
Line of Credit Facility [Line Items]
Repayments of debt							18,600,000
Debt repurchased face amount							$ 18,200,000
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										$ 3,800,000
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)						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																			$ 2,232,000.000
Line of credit minimum liquidity												$ 5,000,000.0
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
Credit Agreement Amendment Number 4 | Revolving Credit Facility | Subsequent Event
Line of Credit Facility [Line Items]
Line of credit minimum liquidity	$ 5,000,000	$ 800,000		$ 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%

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