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Carrying amount as of the balance sheet date of obligations due all related parties.

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Amount of interest income earned from interest-bearing assets owed to the entity by related party.

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Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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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.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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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.

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Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

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Related Party Transactions - AmTrust Narrative (Details) $ in Thousands														3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 16, 2020 USD ($)	Aug. 31, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jan. 24, 2019	Jan. 11, 2019 USD ($)	Dec. 31, 2018	Jan. 01, 2018	Jul. 01, 2016	Jul. 01, 2013	Jan. 01, 2012 EUR (€)	Apr. 01, 2011 EUR (€)	Jun. 11, 2008	Jul. 01, 2007	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jul. 01, 2018	Dec. 18, 2017
Related Party Transaction [Line Items]
Loan to related party														$ 167,975		$ 167,975		$ 167,975
Interest income														$ 14,663	$ 31,849	$ 33,028	$ 64,703
Founding shareholders \| AmTrust Financial Services, Inc.
Related Party Transaction [Line Items]
Controlling interest, ownership percentage														53.40%		53.40%
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 Agreement
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 Agreement \| Post-Termination Endorsement, Maximum Loss Corridor
Related Party Transaction [Line Items]
Related party transaction amount			$ 40,500
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| Returned Gross Unearned Premiums
Related Party Transaction [Line Items]
Related party transaction amount															(647,980)
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| Returned Unearned Premiums, Net
Related Party Transaction [Line Items]
Related party transaction amount															(436,760)
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| Funds Withheld Arrangement
Related Party Transaction [Line Items]
Related party transaction amount					$ (575,000)											$ 575,000		575,000
Accrued interest on collateral held by related party														$ 3,803		$ 3,803		5,073
Calculated interest rate with related party					3.50%									2.65%		2.65%
Interest income from related party														$ 3,806	5,017	$ 7,606	9,443
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| AmTrust Quota Shares Reinsurance Agreement, Partial Termination Amendment
Related Party Transaction [Line Items]
Percent of ceding commission payable, period increase						5.00%
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| 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 Agreement \| Post-Termination Endorsement, Minimum Excess Funding Requirement
Related Party Transaction [Line Items]
Related party transaction amount			$ 54,000
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| 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 Agreement \| Post-Termination Endorsement No. 2, Minimum Excess Funding Requirement
Related Party Transaction [Line Items]
Related party transaction amount	$ 54,000
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| Minimum
Related Party Transaction [Line Items]
Commission rate, adjustment criteria, loss ratio floor									81.50%
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| Maximum
Related Party Transaction [Line Items]
Commission rate, adjustment criteria, loss ratio ceiling									95.00%
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| 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														861,978		861,978		1,155,955
Accrued interest on collateral held by related party														3,273		3,273		7,366
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														119	1,398	353	3,375
Balance due to related party														1,961		1,961		2,372
AmTrust Financial Services, Inc. \| Asset Management Agreement
Related Party Transaction [Line Items]
Cancellation notice period													30 days
Quarterly brokerage fee, above portfolio threshold, percent of average holdings							0.02125%
AmTrust Financial Services, Inc. \| Asset Management Agreement \| Investment Management Fee
Related Party Transaction [Line Items]
Expenses from related party transactions														350	678	750	1,453
AEL \| AmTrust Quota Share Reinsurance Agreement
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														219,170		219,170		253,631
Accrued interest on collateral held by related party														1,764		1,764		1,821
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																93,188		57,305
Calculated interest rate with related party				0.50%
Interest income from related party														127	72	198	125
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																200		$ 269
Risk Services - Vermont, Inc. \| Insurance Management Services Agreement
Related Party Transaction [Line Items]
Cancellation notice period		3 months
Agreement initial term		3 years
Renewal term		3 years
Risk Services - Vermont, Inc. \| Insurance Management Services Agreement, Initial Retainer
Related Party Transaction [Line Items]
Expenses from related party transactions		$ 100
Risk Services - Vermont, Inc. \| Insurance Management Services Agreement, Fees
Related Party Transaction [Line Items]
Expenses from related party transactions		$ 100												25		50
Notes Receivable, Related Party
Related Party Transaction [Line Items]
Interest income														$ 860	$ 1,842	$ 2,225	$ 3,664
Effective yield														2.00%	4.40%	2.60%	4.40%
Maiden Holdings, Ltd. \| Leah Karfunkel
Related Party Transaction [Line Items]
Noncontrolling interest, ownership percentage														7.90%		7.90%
Maiden Holdings, Ltd. \| Barry Zyskind
Related Party Transaction [Line Items]
Noncontrolling interest, ownership percentage														7.40%		7.40%
Maiden Holdings, Ltd. \| George Karfunkel, less than 5% ownership
Related Party Transaction [Line Items]
Noncontrolling interest, ownership percentage														5.00%		5.00%