XML 95 R82.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Schedule of Valuation Activity for Warrants Accounted for Derivative Liability (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Strome Warrants [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Carrying value beginning period | $ 704,707 | $ 1,036,687 | $ 1,036,687 | $ 587,971
Change in valuation of warrant derivative liabilities | (339,924) | 63,160 | (331,980) | 448,716
Carrying value at end of the period | 364,783 | 1,099,847 | 704,707 | 1,036,687
Carrying amount at end of year | 364,783 | 1,099,847 | 704,707 | 1,036,687
B. Riley Warrants [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Carrying value beginning period | 443,188 | 607,513 | 607,513 | 358,050
Change in valuation of warrant derivative liabilities | (156,888) | 71,750 | (164,325) | 249,463
Carrying value at end of the period | 286,300 | 679,263 | 443,188 | 607,513
Carrying amount at end of year | 286,300 | 679,263 | 443,188 | 607,513
Warrants [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Carrying value beginning period | 1,147,895 | 1,644,200 | 1,644,200 | 1,364,235
Change in valuation of warrant derivative liabilities | (496,812) | 134,910 | (496,305) | 1,015,151
Carrying value at end of the period | 651,083 | 1,779,110 | 1,147,895 | 1,644,200
Carrying amount at end of year | $ 651,083 | 1,779,110 | 1,147,895 | 1,644,200
Level Two Warrants [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Carrying value beginning period |  |  |  | 418,214
Change in valuation of warrant derivative liabilities |  |  |  | 316,972
Carrying value at end of the period |  |  |  |
Carrying amount at end of year |  |  |  |
Exercise of warrants during the year |  |  |  | $ 735,186

X
- Definition Exercise of Warrants. + References No definition available. + Details
Name: | MVEN_ExerciseOfWarrants
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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 No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=MVEN_StromeWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=MVEN_BRileyWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=MVEN_WarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=MVEN_LevelTwoWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |