XML 133 R121.htm IDEA: XBRL DOCUMENT
v3.21.2

Schedule of Components of Preferred Stock (Details) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 28, 2019 | Aug. 10, 2018 | Nov. 11, 2020 | Jun. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, components value |  |  |  |  | $ 55,653,730 |
Conversion of preferred stock into common stock |  |  |  |  | 300,000 |
Preferred stock, components value |  |  |  | $ 18,415,992 | 18,415,992 | $ 55,653,730
Legal fees and other costs |  |  |  |  | $ (323,137) | $ (202,382)
Series H Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, shares issued |  |  |  |  | 19,400 |
Preferred stock, components value |  |  |  |  | $ 18,045,496 |
Issuance of Preferred Stock. shares |  |  |  |  | 108 |
Issuance of Preferred Stock |  |  |  |  | $ 130,896 |
Stock issuance cost |  | $ (18,045,496) |  |  | (17,896) |
Net proceeds received upon issuance of preferred stock |  | $ 19,399,250 |  |  | $ 113,000 |
Conversion of preferred stock into common stock, shares |  |  |  |  | (300) |
Conversion of preferred stock into common stock |  |  |  |  | $ (300,000) |
Issuance of preferred stock upon conversion, shares |  |  |  |  | 389 |
Issuance of preferred stock upon conversion |  |  |  |  | $ 389,000 |
Net issuance of Preferred Stock, shares |  |  |  |  | 197 |
Net issuance of Preferred Stock |  |  |  |  | $ 202,000 |
Preferred stock, shares issued |  |  |  |  | 19,597 | 19,400
Preferred stock, components value |  |  |  |  | $ 18,247,496 | $ 18,045,496
Beneficial conversion feature |  |  |  |  | $ 502,000 |
Series l Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, shares issued |  |  |  |  | 23,100 |
Preferred stock, components value |  |  |  |  | $ 19,699,742 |
Issuance of Preferred Stock. shares |  |  |  |  |  | 23,100
Issuance of Preferred Stock |  |  |  |  |  | $ 23,100,000
Stock issuance cost |  |  |  |  |  | $ (1,459,858)
Net proceeds received upon issuance of preferred stock | $ 23,100,000 |  |  |  |  |
Conversion of preferred stock into common stock, shares |  |  |  |  | (23,100) |
Conversion of preferred stock into common stock |  |  |  |  | $ (19,699,742) |
Preferred stock, shares issued | 23,100 |  |  |  |  | 23,100
Preferred stock, components value |  |  |  |  |  | $ 19,699,742
Beneficial conversion feature |  |  |  |  | $ 5,082,000 |
Cash paid to B. Riley FBR as placement fee |  |  |  |  |  | (1,386,000)
Legal fees and other costs |  |  |  |  |  | (73,858)
Less Liquidated Damages recognized upon issuance |  |  |  |  |  | (1,940,400)
Total issuance costs and Liquidated Damages |  |  |  |  |  | $ (3,400,258)
Series J Convertible Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, shares issued |  |  |  |  | 20,000 |
Preferred stock, components value |  |  |  |  | $ 17,739,996 |
Issuance of Preferred Stock. shares |  |  |  |  | 10,500 | 20,000
Issuance of Preferred Stock |  |  |  |  | $ 6,000,000 | $ 20,000,000
Stock issuance cost |  |  |  |  |  | (580,004)
Net proceeds received upon issuance of preferred stock |  |  |  |  | $ 6,000,000 | $ 15,000,000
Conversion of preferred stock into common stock, shares |  |  |  |  | (30,500) |
Conversion of preferred stock into common stock |  |  |  |  | $ (23,739,996) |
Issuance of preferred stock upon conversion, shares |  |  |  |  | 30,500 |
Net issuance of Preferred Stock, shares |  |  |  |  |  | 15,000
Net issuance of Preferred Stock |  |  |  |  |  | $ 15,000,000
Preferred stock, shares issued |  |  |  |  |  | 20,000
Preferred stock, components value |  |  |  |  |  | $ 17,739,996
Beneficial conversion feature |  |  |  |  | 586,545 |
Cash paid to B. Riley FBR as placement fee |  |  |  |  |  | (525,240)
Legal fees and other costs |  |  |  |  |  | (54,764)
Less Liquidated Damages recognized upon issuance |  |  |  |  |  | (1,680,000)
Total issuance costs and Liquidated Damages |  |  |  |  |  | $ (2,260,004)
shares issued for payment of debt, shares |  |  |  |  |  | (5,000)
shares issued for payment of debt |  |  |  |  |  | $ (5,000,000)
Net issuance of Series H Preferred Stock |  |  |  |  |  | $ 17,739,996
Issuance of preferred stock upon conversion |  |  |  |  | $ 23,739,996 |
Series K Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Issuance of Preferred Stock. shares |  |  |  |  | 18,042 |
Issuance of Preferred Stock |  |  |  |  | $ 18,042,000 |
Stock issuance cost |  |  |  |  | $ (560,500) |
Net proceeds received upon issuance of preferred stock |  |  | $ 18,042,000 |  |  |
Conversion of preferred stock into common stock, shares |  |  |  |  | (18,042) |
Conversion of preferred stock into common stock |  |  |  |  | $ (17,481,500) |
Issuance of preferred stock upon conversion |  |  |  |  | $ 17,481,500 |
Preferred stock, shares issued |  |  | 18,042 |  |  |
Preferred stock, components value |  |  |  |  |  |
Beneficial conversion feature |  |  |  |  | 9,472,050 |
Cash paid to B. Riley FBR as placement fee |  |  |  |  | (440,500) |
Legal fees and other costs |  |  |  |  | $ (120,000) |
Issuance of Preferred Stock on October 23, 2020, shares |  |  |  |  | 6,750 |
Issuance of Preferred Stock on October 23, 2020 |  |  |  |  | $ 6,750,000 |
Issuance of Series K Preferred Stock on October 28, 2020, shares |  |  |  |  | 5,292 |
Issuance of Series K Preferred Stock on October 28, 2020 |  |  |  |  | $ 5,292,000 |
Issuance of Series K Preferred Stock on November 11, 2020, shares |  |  |  |  | 6,000 |
Issuance of Series K Preferred Stock on November 11, 2020 |  |  |  |  | $ 6,000,000 |

X
- Definition Beneficial conversion feature on Series H Preferred Stock. + References No definition available. + Details
Name: | MVEN_BeneficialConversionFeatureOnPreferredStock
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Issuance of preferred stock upon conversion, shares. + References No definition available. + Details
Name: | MVEN_DebtInstrumentConvertibleBeneficialConversionFeatureShares
Namespace Prefix: | MVEN_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total issuance costs and Liquidated Damages. + References No definition available. + Details
Name: | MVEN_IssuanceCostsAndLiquidatedDamages
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | MVEN_IssuanceOfPreferredStockUponConversion
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Liquidated Damages recognized upon issuance. + References No definition available. + Details
Name: | MVEN_LiquidatedDamagesRecognizedUponIssuance
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net issuance of Series H Preferred Stock. + References No definition available. + Details
Name: | MVEN_NetIssuanceOfPreferredStock
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition shares issued for payment of debt. + References No definition available. + Details
Name: | MVEN_SharesIssuedForPaymentOfDebt
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition shares issued for payment of debt, shares. + References No definition available. + Details
Name: | MVEN_SharesIssuedForPaymentOfDebtShares
Namespace Prefix: | MVEN_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Issuance of Preferred Stock one. shares + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodSharesNewIssuesOne
Namespace Prefix: | MVEN_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Issuance of Series K Preferred Stock on November 11, 2020, shares. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodSharesNewIssuesThree
Namespace Prefix: | MVEN_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Issuance of Series K Preferred Stock on October 28, 2020, shares + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodSharesNewIssuesTwo
Namespace Prefix: | MVEN_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net issuance of Series H Preferred Stock, shares. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodSharesToPreferredStock
Namespace Prefix: | MVEN_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shares issued as placement fee. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodValueForPlacementFee
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Issuance of Preferred Stock one. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodValueNewIssuesOne
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Issuance of Series K Preferred Stock on November 11, 2020. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodValueNewIssuesThree
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Issuance of Series K Preferred Stock on October 28, 2020. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodValueNewIssuesTwo
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net issuance of Series H Preferred Stock. + References No definition available. + Details
Name: | MVEN_StockIssuedDuringPeriodValueToPreferredStock
Namespace Prefix: | MVEN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21538-112644 + Details
Name: | us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_LegalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from issuance of preferred stocks identified as being convertible into another form of financial instrument, typically the entity's common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfConvertiblePreferredStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of new stock issued during the period. + 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(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: 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(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The gross value of stock issued during the period upon the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644 Reference 3: 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(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: 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(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + 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 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + 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(27)(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_TemporaryEquitySharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesHPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=MVEN_SeriesIPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=MVEN_SeriesJConvertiblePreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=MVEN_SeriesKPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |