v2.4.0.8

Related Party Transactions - NGHC (Details) (USD $) |  |  | 1 Months Ended |  | 1 Months Ended | 0 Months Ended |  | 9 Months Ended | 31 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 Senior notes [Member] 8.25% Senior note [Member] | Jun. 30, 2011 Senior notes [Member] 8.25% Senior note [Member] | Jun. 30, 2011 Junior subordinated debt [Member] Trust Preferred Securities [Member] | Jun. 30, 2013 Junior subordinated debt [Member] Trust Preferred Securities [Member] | Jun. 30, 2011 National General Holdings Corp. [Member] Senior notes [Member] 8.25% Senior note [Member] | Jul. 15, 2011 National General Holdings Corp. [Member] Junior subordinated debt [Member] Trust Preferred Securities [Member] Maiden Capital Financing Trust [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] Junior subordinated debt [Member] Trust Preferred Securities [Member] Maiden Capital Financing Trust [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Quota Share Reinsurance Agreement [Member] | Sep. 30, 2012 National General Holdings Corp. [Member] NGHC Quota Share Reinsurance Agreement [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Quota Share Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2012 National General Holdings Corp. [Member] NGHC Quota Share Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Quota Share Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2012 National General Holdings Corp. [Member] NGHC Quota Share Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Subsidiaries Reinsurance Agreement [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Subsidiaries Reinsurance Agreement [Member] Layer One [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Subsidiaries Reinsurance Agreement [Member] Layer Two [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Subsidiaries Reinsurance Agreement [Member] Premiums Earned [Member] | Sep. 12, 2012 National General Holdings Corp. [Member] NGHC Integon Consulting Agreement [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Integon Consulting Agreement [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC Integon Consulting Agreement [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2012 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2012 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Commissions Paid [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Premiums Earned [Member] | Jun. 30, 2012 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Premiums Earned [Member] | Jun. 30, 2013 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Premiums Earned [Member] | Jun. 30, 2012 National General Holdings Corp. [Member] NGHC New South Insurance Company Reinsurance Agreement [Member] Premiums Earned [Member] | Jul. 15, 2011 Michael Karfunkel [Member] Junior subordinated debt [Member] Trust Preferred Securities [Member] Maiden Capital Financing Trust [Member] | Jul. 15, 2011 George Karfunkel [Member] Junior subordinated debt [Member] Trust Preferred Securities [Member] Maiden Capital Financing Trust [Member]
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of net premiums of personal lines business reinsured |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent participation in quota share by subsidiary |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of net premiums of personal lines business received by subsidiary |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of net premiums of personal lines business received by reinsurers |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of net losses related to premiums of personal lines business assumed by reinsurers |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agreement period |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Contract extension |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation notice period |  |  |  |  |  |  |  |  | 9 months |  |  |  |  |  |  |  |  | 120 days |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation notice period upon the occurrence of certain early termination events |  |  |  |  |  |  |  |  | 60 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early termination events, reduction threshold of stockholders' equity |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, percent of ceded written premiums |  |  |  |  |  |  |  | 32.00% | 32.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, adjusted percent of ceded written premiums |  |  |  |  |  |  |  |  | 34.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, adjustment criteria, loss ratio ceiling |  |  |  |  |  |  |  |  | 60.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, reduced adjustment to percent of ceded written premiums |  |  |  |  |  |  |  | 30.00% | 30.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, adjustment criteria, loss ratio floor |  |  |  |  |  |  |  | 64.50% | 64.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses recorded from related party transactions |  |  |  |  |  |  |  |  |  | $ 22,101,000 | $ 21,402,000 | $ 43,698,000 | $ 41,579,000 |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |  |
Liability percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reinsurance coverage limit |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reinsurance coverage threshold |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum limit of liability attaching |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly base fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Fee rate per policy quote |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Fee rate per policy requote |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount | 107,500,000 | 107,500,000 |  |  | 107,500,000 |  | 260,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of personal lines business ceded to related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Revenue from related parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,000 |  | 85,000 | 166,000 |  |  |  |  |  | 0 | 0 | 0 | 0 |  |
Stated interest rate |  | 8.25% |  | 14.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount repurchased |  |  | $ 107,500,000 |  | $ 107,500,000 | $ 12,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 79,066,000 | $ 25,000,000

X
- Definition Related Party Transaction, Agreement Period + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionAgreementPeriod
Namespace Prefix: | mhld_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Automatic Renewal Period + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionAutomaticRenewalPeriod
Namespace Prefix: | mhld_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Cancellation Notice Period + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCancellationNoticePeriod
Namespace Prefix: | mhld_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Cancellation Notice Period Upon the Occurrence of Certain Early Termination Events + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCancellationNoticePeriodUponOccurrenceOfCertainEarlyTerminationEvents
Namespace Prefix: | mhld_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Commission Rate, Adjusted Percent of Ceded Written Premiums + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCommissionRateAdjustedPercentOfCededWrittenPremiums
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Commission Rate, Adjustment Criteria, Loss Ratio Ceiling + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCommissionRateAdjustmentCriteriaLossRatioCeiling
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Commission Rate, Adjustment Criteria, Loss Ratio Floor + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCommissionRateAdjustmentCriteriaLossRatioFloor
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Commission Rate, Percent of Ceded Written Premiums + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCommissionRatePercentOfCededWrittenPremiums
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Commission Rate, Reduced Adjustment Adjusted Percent of Ceded Written Premiums + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCommissionRateReducedAdjustmentAdjustedPercentOfCededWrittenPremiums
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Early Termination Events, Reduction Threshold of Stockholders' Equity + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionEarlyTerminationEventsReductionThresholdOfStockholdersEquity
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Fee Rate Per Policy Quote + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionFeeRatePerPolicyQuote
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Transaction, Fee Rate Per Policy Requote + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionFeeRatePerPolicyRequote
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Transaction, Liability Percentage + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionLiabilityPercentage
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Maximum Limit of Liability Attaching + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionMaximumLimitOfLiabilityAttaching
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related Party Transaction, Monthly Base Fee + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionMonthlyBaseFee
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Net Losses Related To Premiums of Personal Lines Business Assumed by Reinsurers + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfNetLossesRelatedToPremiumsOfPersonalLinesBusinessAssumedByReinsurers
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Net Premiums of Personal Lines Business Received by Reinsurers + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfNetPremiumsOfPersonalLinesBusinessReceivedByReinsurers
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Net Premiums of Personal Lines Business Received by Subsidiary + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfNetPremiumsOfPersonalLinesBusinessReceivedBySubsidiary
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Net Premiums of Personal Lines Business Reinsured + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfNetPremiumsOfPersonalLinesBusinessReinsured
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Personal Lines Business Ceded to Related Party + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfPersonalLinesBusinessCededToRelatedParty
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent Participation in Quota Share by Subsidiary + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentParticipationInQuotaShareBySubsidiary
Namespace Prefix: | mhld_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Reinsurance Coverage Limit + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionReinsuranceCoverageLimit
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Transaction, Reinsurance Coverage Threshold + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionReinsuranceCoverageThreshold
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 07 -Paragraph b -Subparagraph 1 -Article 6 + Details
Name: | us-gaap_RevenueFromRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration