Debt instrument, basis spread on variable rate, cash rate.

No definition available.

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Namespace Prefix:	bmtm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility accounting impact.

+ References

No definition available.

+ Details

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Namespace Prefix:	bmtm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility amendment fee.

+ References

No definition available.

+ Details

Name:	bmtm_LineOfCreditFacilityAmendmentFee
Namespace Prefix:	bmtm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility repayment date.

+ References

No definition available.

+ Details

Name:	bmtm_LineOfCreditFacilityRepaymentDate
Namespace Prefix:	bmtm_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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

- Definition

Date the credit facility first became available, in YYYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInitiationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

+ Details

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Balance Type:	na
Period Type:	instant

Centre Lane Senior Secured Credit Facility - Schedule of Amendments in Line of Credit Facilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025
Line of Credit Facility [Line Items]
Draw	$ 39,852
Amendment Fee	$ 4,987
Common Stock Issued (in shares)	47,679,827
First Amendment
Line of Credit Facility [Line Items]
Draw Date	Apr. 26, 2021
Draw	$ 0
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 0
Common Stock Issued (in shares)	150,000
Accounting Impact	Extinguishment
Second Amendment
Line of Credit Facility [Line Items]
Draw Date	May 26, 2021
Draw	$ 1,500
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 750
Common Stock Issued (in shares)	3,000,000
Accounting Impact	Modification
Third Amendment
Line of Credit Facility [Line Items]
Draw Date	Aug. 12, 2021
Draw	$ 500
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 250
Common Stock Issued (in shares)	2,000,000
Accounting Impact	Modification
Fourth Amendment
Line of Credit Facility [Line Items]
Draw Date	Aug. 31, 2021
Draw	$ 1,100
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 550
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Fifth Amendment
Line of Credit Facility [Line Items]
Draw Date	Oct. 08, 2021
Draw	$ 725
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 363
Common Stock Issued (in shares)	0
Accounting Impact	Extinguishment
Sixth Amendment
Line of Credit Facility [Line Items]
Draw Date	Nov. 05, 2021
Draw	$ 800
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 800
Common Stock Issued (in shares)	7,500,000
Accounting Impact	Modification
Seventh Amendment
Line of Credit Facility [Line Items]
Draw Date	Dec. 23, 2021
Draw	$ 500
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 500
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Amendment One through Seven
Line of Credit Facility [Line Items]
Draw	$ 5,125
Amendment Fee	$ 3,213
Common Stock Issued (in shares)	12,650,000
Eighth Amendment
Line of Credit Facility [Line Items]
Draw Date	Jan. 26, 2022
Draw	$ 350
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	8.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 350
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Ninth Amendment
Line of Credit Facility [Line Items]
Draw Date	Feb. 11, 2022
Draw	$ 250
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 13
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Tenth Amendment
Line of Credit Facility [Line Items]
Draw Date	Mar. 11, 2022
Draw	$ 300
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 15
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Eleventh Amendment
Line of Credit Facility [Line Items]
Draw Date	Mar. 25, 2022
Draw	$ 500
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 25
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Twelveth Amendment
Line of Credit Facility [Line Items]
Draw Date	Apr. 15, 2022
Draw	$ 450
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 23
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Thirteenth Amendment
Line of Credit Facility [Line Items]
Draw Date	May 10, 2022
Draw	$ 500
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 25
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Fourteenth Amendment
Line of Credit Facility [Line Items]
Draw Date	Jun. 10, 2022
Draw	$ 350
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 18
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Fifteenth Amendment
Line of Credit Facility [Line Items]
Draw Date	Jul. 08, 2022
Draw	$ 350
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ (58)
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Amendment Eight through Fifteen
Line of Credit Facility [Line Items]
Draw	$ 3,050
Amendment Fee	$ 411
Common Stock Issued (in shares)	0
Sixteenth Amendment
Line of Credit Facility [Line Items]
Draw Date	Feb. 10, 2023
Draw	$ 1,500
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 75
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Seventeenth Amendment
Line of Credit Facility [Line Items]
Draw Date	Apr. 20, 2023
Draw	$ 26,316
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	15.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 708
Common Stock Issued (in shares)	21,401,993
Accounting Impact	Extinguishment
Nineteenth Amendment
Line of Credit Facility [Line Items]
Draw Date	Jul. 08, 2023
Draw	$ 2,000
Repayment Date	Dec. 31, 2024
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	7.00%
Amendment Fee	$ 100
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Amendment Sixteen Through Nineteen
Line of Credit Facility [Line Items]
Draw	$ 29,816
Amendment Fee	$ 883
Common Stock Issued (in shares)	21,401,993
Twentieth Amendment
Line of Credit Facility [Line Items]
Draw Date	Jun. 05, 2024
Draw	$ 0
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 472
Common Stock Issued (in shares)	0
Accounting Impact	Modification
Twentyone Amendment
Line of Credit Facility [Line Items]
Draw Date	Dec. 26, 2024
Draw	$ 1,861
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	15.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 0
Common Stock Issued (in shares)	5,001,991
Accounting Impact	Modification
Amendment Twenty Through Twenty One
Line of Credit Facility [Line Items]
Draw	$ 1,861
Amendment Fee	$ 472
Common Stock Issued (in shares)	5,001,991
Twenty Third Amendment
Line of Credit Facility [Line Items]
Draw Date	Sep. 30, 2025
Draw	$ 0
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 8
Common Stock Issued (in shares)	2,832,485		2,832,485
Accounting Impact	Modification
Twenty Fourth Amendment
Line of Credit Facility [Line Items]
Draw Date	Dec. 31, 2025
Draw	$ 0
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Interest Rate Cash	0.00%
Amendment Fee	$ 0
Common Stock Issued (in shares)	2,870,792	2,870,792
Accounting Impact	Modification
Amendment Twenty Third Through Twenty Four
Line of Credit Facility [Line Items]
Draw	$ 0
Amendment Fee	$ 8
Common Stock Issued (in shares)	5,703,277
Twenty-Fifth Amendment
Line of Credit Facility [Line Items]
Draw Date	Mar. 31, 2026
Draw	$ 0
Repayment Date	Dec. 20, 2026
Interest Rate Paid-in-Kind	0.00%
Amendment Fee	$ 0
Common Stock Issued (in shares)	2,922,566
Accounting Impact	Modification
Amendment Twenty Five Through Twenty Five
Line of Credit Facility [Line Items]
Draw	$ 0
Amendment Fee	$ 0
Common Stock Issued (in shares)	2,922,566