Schedule V - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Premiums and fees receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	$ 39,093	$ 39,926	$ 26,569
Additions - Charged to Expense	(5,549)	6,985	20,720
Deductions - Amounts Written Off	(6,998)	(7,817)	(7,363)
Ending Balance	26,546	39,093	39,926
Due from reinsurers
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	947	1,010	1,049
Additions - Charged to Expense	0	65	(29)
Deductions - Amounts Written Off	(257)	(128)	(10)
Ending Balance	690	947	1,010
Deferred federal and foreign income taxes
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	35,195	16,619	5,457
Additions - Charged to Expense	1,298	18,772	12,663
Deductions - Amounts Written Off	(3,243)	(196)	(1,501)
Ending Balance	33,250	35,195	16,619
Loan loss reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	3,383	3,383	3,397
Additions - Charged to Expense	0	0	(14)
Deductions - Amounts Written Off	(1,237)	0	0
Ending Balance	2,146	3,383	3,383
General Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	78,618	60,938	36,472
Additions - Charged to Expense	(4,251)	25,822	33,340
Deductions - Amounts Written Off	(11,735)	(8,141)	(8,874)
Ending Balance	$ 62,632	$ 78,618	$ 60,938