v3.19.2

Subsequent Events (Details) - USD ($) $ in Thousands					3 Months Ended	6 Months Ended	7 Months Ended
	Aug. 12, 2019	Jul. 31, 2019	Jul. 01, 2018	Jul. 01, 2007	Jun. 30, 2019	Jun. 30, 2019	Aug. 12, 2019	Dec. 27, 2018
Subsequent Event
Subsequent Event [Line Items]
Quota share reinsurance agreement, excess retention		$ 2,178,535
Quota share reinsurance agreement, amount retained		600,000
Quota share reinsurance agreement, retrocession premium		445,000
Reinsurance adverse development cover		155,000
Reinsurance cumulative ceded losses (exceeding)		445,000
Quota share reinsurance agreement, retrocession premium, interest rate							2.64%
Maximum | Subsequent Event
Subsequent Event [Line Items]
Reinsurance covered losses (not to exceed)		$ 312,786
Forecast | Subsequent Event
Subsequent Event [Line Items]
Quota share reinsurance agreement, retrocession premium, interest	$ 7,261
Maiden US Sale | Discontinued Operations, Disposed of by Sale
Subsequent Event [Line Items]
Proceeds of sale								$ 286,375
Net loss on disposal of discontinued operation					$ 16,715	$ 16,715
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement
Subsequent Event [Line Items]
Percent of losses with respect to current lines of business, excluding those above covered business threshold to related party			40.00%	40.00%
AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Percent of losses with respect to current lines of business, excluding those above covered business threshold to related party		40.00%
Commutation And Release Agreement, Commutation Payment | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Related party transaction amount		$ 312,786
Commutation And Release Agreement, Net Ceded Reserves | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Related party transaction amount		330,682
Commutation And Release Agreement, Commutation Payment Paid By Entity | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Related party transaction amount		$ 17,896
Commutation And Release Agreement, Commutation Payment, Premium Interest | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Forecast | Subsequent Event
Subsequent Event [Line Items]
Interest expense with related party	$ 6,335
Calculated interest rate with related party							3.30%
Post-Termination Endorsement | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Percentage of required funding on obligations with related party		105.00%
Post-Termination Endorsement | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Maximum | Subsequent Event
Subsequent Event [Line Items]
Percentage of required funding on obligations with related party		110.00%
Post-Termination Endorsement, Minimum Excess Funding Requirement | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Related party transaction amount		$ 54,000
Post-Termination Endorsement, Maximum Loss Corridor | AmTrust Financial Services, Inc. | AmTrust Quota Share Reinsurance Agreement | Subsequent Event
Subsequent Event [Line Items]
Related party transaction amount		$ 40,500

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