v3.19.2

Basis of Presentation (Details) - USD ($) $ in Thousands			12 Months Ended
	Jan. 18, 2019	Dec. 27, 2018	Dec. 31, 2018	Jun. 30, 2019	Aug. 29, 2018	Jun. 30, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intercompany proceeds	$ 70,000		$ 125,000
Loss and loss adjustment expenses			$ 3,055,976	$ 3,051,265		$ 2,541,975	$ 2,386,722
Renewal Rights Sale | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds of sale					$ 7,500
Maiden US Sale | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds of sale		$ 286,375
Maximum | Maiden Reinsurance North America, Inc. Sale | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reinsurance payable		25,000
Maiden Reinsurance Ltd. | Maiden Reinsurance North America, Inc. Sale | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ceded premiums payable		12,250
Loss and loss adjustment expenses						$ 100,000
Cavello Bay Reinsurance Limited | Maiden Reinsurance North America, Inc. Sale | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ceded commission paid		$ 1,750

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The consideration due to the assuming enterprise as of the balance sheet date under the terms of the reinsurance contract in exchange for the right to receive reimbursement from such entity for covered claims and expenses.

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The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

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