v3.22.1

Related Party Transactions - Narrative (Details) $ in Thousands |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 7 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 16, 2020 | Aug. 12, 2019 USD ($) | Jul. 31, 2019 USD ($) | Jan. 11, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jan. 01, 2018 | Jul. 01, 2016 | Jul. 01, 2013 | Jan. 01, 2012 EUR (€) | Apr. 01, 2011 EUR (€) | Jun. 11, 2008 | Jul. 01, 2007 | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Jun. 30, 2019 USD ($) | Aug. 12, 2019 | Jul. 31, 2019 USD ($) | Dec. 31, 2021 USD ($) | Jul. 01, 2018 | Dec. 31, 2014
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan to related party |  |  |  |  |  |  |  |  |  |  |  |  | $ 167,975 |  |  |  |  | $ 167,975 |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  |  | 6,750 | $ 10,185 |  |  |  |  |  |
Notes Receivable, Related Party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  |  | $ 879 | $ 860 |  |  |  |  |  |
Effective yield |  |  |  |  |  |  |  |  |  |  |  |  | 2.10% | 2.00% |  |  |  |  |  |
Founding shareholders | AmTrust Financial Services, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Controlling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 55.20% |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.00%
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of premiums written, net of cost of unaffiliated inuring reinsurance from related party |  |  |  |  |  |  |  |  |  |  |  | 40.00% |  |  |  |  |  |  |  |
Percent of losses with respect to current lines of business, excluding those above covered business threshold to related party |  |  | 40.00% |  |  |  |  | 40.00% |  |  |  | 40.00% |  |  |  |  |  |  |  |
Commission rate, percent of ceded written premiums |  |  |  |  |  |  |  |  |  |  | 34.375% | 31.00% |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Post-Termination Endorsement, Maximum Loss Corridor |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  | $ 40,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Investments transferred out related to Partial Termination Amendment and Commutation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of ceding commission payable, period increase |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Returned Gross Unearned Premiums |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 647,980 |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Returned Unearned Premiums, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 436,760 |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Commutation And Release Agreement Commutation Payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  | $ 312,786 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Commutation And Release Agreement Net Ceded Reserves |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  | $ 330,682 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Commutation And Release Agreement Commutation Payment Paid By Entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 17,896 |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Commutation And Release Agreement, Commutation Payment, Premium Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party interest expense |  | $ 6,335 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Calculated interest rate with related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.30% |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Investments transferred out for transactions under remaining AmTrust Quota Share business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  | $ 575,000 |  |  |  |  |  |  |  |  | $ 575,000 |  |  |  |  | $ 575,000 |  |
Calculated interest rate with related party |  |  |  |  |  |  |  |  |  |  |  |  | 1.80% |  |  |  |  | 1.80% |  |
Accrued interest on collateral held by related party |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,552 |  |  |  |  | $ 2,609 |  |
Interest income from related party |  |  |  |  |  |  |  |  |  |  |  |  | 2,552 | $ 2,552 |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Post-Termination Endorsement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction, percentage of required funding on obligations |  |  | 105.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Post-Termination Endorsement, Minimum Excess Funding Requirement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  | $ 54,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Post-Termination Endorsement No. 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction, percentage of required funding on obligations | 110.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, adjustment criteria, loss ratio floor |  |  |  |  |  |  |  | 81.50% |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, adjustment criteria, loss ratio ceiling |  |  |  |  |  |  |  | 95.00% |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Segment | Maximum | Post-Termination Endorsement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction, percentage of required funding on obligations |  |  | 110.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | European Hospital Liability Quota Share Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission rate, percent of ceded written premiums |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Premiums and losses related to policies, percentage |  |  |  |  |  |  | 32.50% |  |  | 40.00% |  |  |  |  |  |  |  |  |  |
Maximum limit of liability attaching (in EUR) | € |  |  |  |  |  |  |  |  | € 10,000,000 | € 5,000,000 |  |  |  |  |  |  |  |  |  |
Percent basis currency equivalent of maximum limit of liability attaching |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Future premiums and losses related to policies, percentage |  |  |  |  |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | European Hospital Liability Quota Share Agreement | Maximum | Post-Termination Endorsement No. 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction, percentage of required funding on obligations | 120.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Solvency ratio | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral on exposure | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | Reinsurer Trust Assets Collateral Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral held by related party |  |  |  |  |  |  |  |  |  |  |  |  | 138,810 |  |  |  |  | 246,874 |  |
Accrued interest on collateral held by related party |  |  |  |  |  |  |  |  |  |  |  |  | 416 |  |  |  |  | 1,171 |  |
AmTrust Financial Services, Inc. | Reinsurance Brokerage Agreements |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Brokerage fee, percent of premium assumed |  |  |  |  |  |  |  |  |  |  |  | 1.25% |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | Reinsurance Brokerage Agreements | Brokerage expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses from related party transactions |  |  |  |  |  |  |  |  |  |  |  |  | (60) | (69) |  |  |  |  |  |
Balance due to related party |  |  |  |  |  |  |  |  |  |  |  |  | 1,021 |  |  |  |  | 1,147 |  |
AmTrust Financial Services, Inc. | Asset Management Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly brokerage fee, above portfolio threshold, percent of average holdings |  |  |  |  |  | 0.02125% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation notice period |  |  |  |  |  | 30 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
AmTrust Financial Services, Inc. | Asset Management Agreement | Investment Management Fee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expenses from related party transactions |  |  |  |  |  |  |  |  |  |  |  |  | (126) | (272) |  |  |  |  |  |
AEL | AmTrust Quota Share Reinsurance Segment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage ceded |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |
AEL | AmTrust European Hospital Liability Quota Share Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral held by related party |  |  |  |  |  |  |  |  |  |  |  |  | 234,633 |  |  |  |  | 244,488 |  |
Accrued interest on collateral held by related party |  |  |  |  |  |  |  |  |  |  |  |  | 1,538 |  |  |  |  | 1,273 |  |
AmTrust International Underwriters DAC (AIU) | AmTrust European Hospital Liability Quota Share Agreement | Collateral Provided For Share Under Quota Share Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,755 |  |  |  |  | 26,460 |  |
Calculated interest rate with related party |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |
Interest income from related party |  |  |  |  |  |  |  |  |  |  |  |  | $ 26 | $ 37 |  |  |  |  |  |
AmTrust International Underwriters DAC (AIU) | AmTrust European Hospital Liability Quota Share Agreement | Accrued Interest On Collateral Provided For Share Under Quota Share Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  |  |  |  |  |  |  |  |  | 163 |  |  |  |  | 141 |  |
Affiliated Entity | Limited Partnership Agreement | 683 Capital Management, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related party transaction amount (returned) |  |  |  |  |  |  |  |  |  |  |  |  | $ 32,861 |  |  |  |  | $ 32,929 |  |
Maiden Holdings, Ltd. | Leah Karfunkel |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 7.80% |  |  |  |  |  |  |
Maiden Holdings, Ltd. | Barry Zyskind |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 7.30% |  |  |  |  |  |  |
Maiden Holdings, Ltd. | George Karfunkel, less than 5% ownership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |
Maiden Holdings, Ltd. | Affiliated Entity | 683 Capital Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 6.70% |  |  |  |  |  |  |

X
- Definition Controlling Interest, Ownership Percentage + References No definition available. + Details
Name: | mhld_ControllingInterestOwnershipPercentage
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Accrued Interest on Collateral Held by Related Party + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionAccruedInterestOnCollateralHeldByRelatedParty
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Related Party Transaction, Brokerage Fee, Percent of Premium Assumed + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionBrokerageFeePercentOfPremiumAssumed
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
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, Collateral Held by Related Party + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionCollateralHeldByRelatedParty
Namespace Prefix: | mhld_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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: | dtr-types: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: | dtr-types: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: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Future Premiums and Losses Related to Policies + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionFuturePremiumsandLossesRelatedtoPolicies
Namespace Prefix: | mhld_
Data Type: | dtr-types: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, Percent Basis Currency Equivalent of Maximum Limit of Liability Attaching + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentBasisCurrencyEquivalentOfMaximumLimitOfLiabilityAttaching
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent Of Ceded Business Amount + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfCededBusinessAmount
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Percent Of Ceding Commission Payable, Period Increase (Decrease) + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfCedingCommissionPayablePeriodIncreaseDecrease
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Losses With Respect to Current Lines of Business, Excluding Those Above Covered Business Threshold To Related Party + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfLossesWithRespectToCurrentLinesOfBusinessExcludingThoseAboveCoveredBusinessThresholdToRelatedParty
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percent of Premium Written, Net of Cost of Unaffiliated Inuring Reinsurance From Related Party + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentOfPremiumWrittenNetOfCostOfUnaffiliatedInuringReinsuranceFromRelatedParty
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percentage Of Collateral On Exposure + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentageOfCollateralOnExposure
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Percentage Of Required Funding On Obligations + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPercentageOfRequiredFundingOnObligations
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Premiums and Losses Related to Policies + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionPremiumsAndLossesRelatedToPolicies
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Quarterly Brokerage Fee, Above Portfolio Threshold, Percent of Average Holdings + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionQuarterlyBrokerageFeeAbovePortfolioThresholdPercentOfAverageHoldings
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Solvency Ratio + References No definition available. + Details
Name: | mhld_RelatedPartyTransactionSolvencyRatio
Namespace Prefix: | mhld_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of obligations due all related parties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(C)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(B)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(3),(4)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_DueToRelatedPartiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of interest expense incurred on a debt or other obligation to related party. + References No definition available. + Details
Name: | us-gaap_InterestExpenseRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income earned from interest-bearing assets owed to the entity by related party. + References No definition available. + Details
Name: | us-gaap_InterestIncomeRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities. + 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 210.5-03.7(a),(b)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_InvestmentIncomeInterestAndDividend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_LoansAndLeasesReceivableRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage added to reference rate used to compute variable rate on loan receivable. + References No definition available. + Details
Name: | us-gaap_LoansReceivableBasisSpreadOnVariableRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Yield on the receivable, on which interest has been imputed, as calculated from its issuance value or purchase price. The calculated effective interest rate considers factors such as the issued face value or price paid for the receivable, the time period between payments, and the time until maturity [full receipt] of the receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 + Details
Name: | us-gaap_ReceivableWithImputedInterestEffectiveYieldInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 + Details
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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://fasb.org/us-gaap/role/ref/legacyRef -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
- 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_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=mhld_NotesReceivableRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_FoundingShareholdersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mhld_EntitiesOwnedByRelatedPartiesAxis=mhld_AmtrustFinancialServicesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_AmtrustFinancialServicesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mhld_AmtrustQuotaShareReinsuranceSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_PostTerminationEndorsementMaximumLossCorridorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_AmTrustQuotaSharesReinsuranceAgreementPartialTerminationAmendmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_ReturnedGrossUnearnedPremiumsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_ReturnedUnearnedPremiumsNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_CommutationAndReleaseAgreementCommutationPaymentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_CommutationAndReleaseAgreementNetCededReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_CommutationAndReleaseAgreementCommutationPaymentPaidByEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_CommutationAndReleaseAgreementCommutationPaymentPremiumInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_FundsWithheldArrangementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_PostTerminationEndorsementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_PostTerminationEndorsementMinimumExcessFundingRequirementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_PostTerminationEndorsementNo.2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mhld_EuropeanHospitalLiabilityQuotaShareAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_PostTerminationEndorsementNo.1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mhld_ReinsurerTrustAssetsCollateralAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mhld_ReinsuranceBrokerageAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mhld_RelatedPartyTransactionByTypeAxis=mhld_BrokerageExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mhld_AssetManagementAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mhld_RelatedPartyTransactionByTypeAxis=mhld_InvestmentManagementFeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_AELMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mhld_AmtrustEuropeanHospitalLiabilityQuotaShareAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_AmTrustInternationalUnderwritersDACMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_CollateralProvidedForShareUnderQuotaShareAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_AccruedInterestOnCollateralProvidedForShareUnderQuotaShareAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mhld_LimitedPartnershipAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=mhld_A683CapitalManagementLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=mhld_MaidenHoldingsLtd.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_LeahKarfunkelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_BarryZyskindMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mhld_GeorgeKarfunkelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=mhld_A683CapitalPartnersLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |