Debt Instrument, Maximum Amount of Support.

No definition available.

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Namespace Prefix:	cidm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Prepayment Premium.

+ References

No definition available.

+ Details

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Namespace Prefix:	cidm_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Variable Rate Basis, Floor.

+ References

No definition available.

+ Details

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Namespace Prefix:	cidm_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Long-term Debt, Current Maturities, Gross.

+ References

No definition available.

+ Details

Name:	cidm_LongtermDebtCurrentMaturitiesGross
Namespace Prefix:	cidm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This is the result of the principal amount outstanding of total loans managed or securitized less securitized loans and loans that are in the process of being securitized.

+ References

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-Paragraph 4
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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+ Details

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Balance Type:	debit
Period Type:	instant

- Details

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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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- Details

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- Details

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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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- Details

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Notes Payable (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
Notes Payable (Details) - USD ($) $ in Thousands	Apr. 15, 2020	Feb. 28, 2013	Jun. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Mar. 30, 2018
Notes Payable (Details) [Line Items]
Debt face amount			$ 70,000	$ 70,000
Restricted cash			1,000	1,000
Current portion gross			3,418	9,742
Proceeds from issuance of debt	$ 2,200
CDCH [Member]
Notes Payable (Details) [Line Items]
Principal amount loan			3,500,000
Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Restricted cash			1,000		$ 1,000
Line of Credit [Member]
Notes Payable (Details) [Line Items]
Maximum borrowing capacity				18,000
Current portion gross			400	2,000
Remaining borrowing capacity				8,100
Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Debt face amount		$ 70,000
Basis spread on variable rate		9.00%
Debt interest rate		2.50%
Debt instrument maximum amount of support			1,500
Current portion gross			$ 3,031	$ 7,786
Prospect Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Notes Payable (Details) [Line Items]
Debt variable rate basis floor		2.00%
Revolving Credit Facility [Member]
Notes Payable (Details) [Line Items]
Maximum borrowing capacity						$ 19,000
Convertible Notes Payable [Member]
Notes Payable (Details) [Line Items]
Debt interest rate	1.00%
Proceeds from issuance of debt	$ 2,200
Debt Instrument, Prepayment Period - Between Second And Third Anniversary [Member] \| Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Prepayment premium			5.00%
Debt Instrument, Prepayment Period - Between Third and Fourth Anniversary [Member] \| Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Prepayment premium			4.00%
Debt Instrument, Prepayment Period - Between Fourth and Fifth Anniversary [Member] \| Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Prepayment premium			3.00%
Debt Instrument, Prepayment Period - Between Fifth and Sixth Anniversary [Member] \| Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Prepayment premium			2.00%
Debt Instrument, Prepayment Period - Between Sixth and Seventh Anniversary [Member] \| Prospect Loan [Member]
Notes Payable (Details) [Line Items]
Prepayment premium			1.00%
Prime Rate [Member] \| Cinedigm Credit Facility [Member] \| Revolving Credit Facility [Member]
Notes Payable (Details) [Line Items]
Basis spread on variable rate			0.50%
London Interbank Offered Rate (LIBOR) [Member] \| Cinedigm Credit Facility [Member] \| Revolving Credit Facility [Member]
Notes Payable (Details) [Line Items]
Basis spread on variable rate			3.25%