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Proceeds Form Contributions From Parent And Subsidiaries

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Related Party Transaction, Premiums and Losses Related to Policies

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Statutory Accounting Practices, Maximum Dividend Rate, Percent of Statutory Capital and Surplus

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Statutory Accounting Practices, Reduction to Total Statutory Capital, Percent Threshold Requiring Approval

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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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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Amount of dividends available for payment after computation of statutory restrictions on capital surplus.

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The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

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Amount of statutory capital required to be maintained as of the balance sheet date under prescribed or permitted statutory accounting practices.

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Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Statutory Requirements and Dividend Restrictions (Details) $ in Thousands						1 Months Ended	12 Months Ended
	Jan. 30, 2019	Jul. 01, 2016	Apr. 01, 2011	Jun. 11, 2008	Jul. 01, 2007	Jan. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) subsidiary	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Statutory Accounting Practices [Line Items]
Net assets							$ 554,916	$ 1,232,626	$ 1,361,152
Intercompany proceeds							$ 125,000
Maximum dividend rate, percent of statutory capital and surplus							25.00%
Reduction to total statutory capital, percent threshold requiring approval							15.00%
SWEDEN
Statutory Accounting Practices [Line Items]
Number of subsidiaries, domiciled insurance \| subsidiary							2
Maiden Bermuda
Statutory Accounting Practices [Line Items]
Statutory Capital and Surplus							$ 869,886	1,205,991
Statutory Net Income (Loss)							(389,372)	(167,307)	87,888
Maiden Bermuda \| BERMUDA
Statutory Accounting Practices [Line Items]
Dividends or distributions limit							301,498
Dividends							0	105,000	445,000
Maiden LF
Statutory Accounting Practices [Line Items]
Statutory Capital and Surplus							7,607	8,552
Statutory Net Income (Loss)							(462)	(441)	756
Maiden LF \| SWEDEN
Statutory Accounting Practices [Line Items]
Dividends or distributions limit							1,873	2,507
Minimum solvency margin							4,243	4,442
Maiden GF
Statutory Accounting Practices [Line Items]
Statutory Capital and Surplus							6,192	6,417
Statutory Net Income (Loss)							98	(242)	0
Maiden GF \| SWEDEN
Statutory Accounting Practices [Line Items]
Minimum solvency margin							$ 4,243	$ 4,442	$ 6,135
Subsequent event
Statutory Accounting Practices [Line Items]
Intercompany proceeds						$ 70,000
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement
Statutory Accounting Practices [Line Items]
Commission rate, percent of ceded written premiums				34.375%	31.00%		20.00%
AmTrust Financial Services, Inc. \| AmTrust Quota Share Reinsurance Agreement \| Subsequent event
Statutory Accounting Practices [Line Items]
Commission rate, percent of ceded written premiums	20.00%
AmTrust Financial Services, Inc. \| AmTrust European Hospital Liability Quota Share Agreement
Statutory Accounting Practices [Line Items]
Commission rate, percent of ceded written premiums			5.00%
Premiums and losses related to policies		32.50%	40.00%
AmTrust Financial Services, Inc. \| AmTrust European Hospital Liability Quota Share Agreement \| Subsequent event
Statutory Accounting Practices [Line Items]
Premiums and losses related to policies	40.00%