Schedule V - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Premiums, fees and other receivables
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	$ 26,546	$ 39,093	$ 39,926
Additions - Charged to Expense	6,783	(5,549)	6,985
Deductions - Amounts Written Off	(6,744)	(6,998)	(7,817)
Ending Balance	27,855	26,546	39,093
Premiums, fees and other receivables | Cumulative Effect, Period Of Adoption, Adjustment
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	1,270
Ending Balance		1,270
Due from reinsurers
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	690	947	1,010
Additions - Charged to Expense	1,187	0	65
Deductions - Amounts Written Off	(3)	(257)	(128)
Ending Balance	7,801	690	947
Due from reinsurers | Cumulative Effect, Period Of Adoption, Adjustment
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	5,927
Ending Balance		5,927
Deferred federal and foreign income taxes
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	33,250	35,195	16,619
Additions - Charged to Expense	46,756	1,298	18,772
Deductions - Amounts Written Off	(518)	(3,243)	(196)
Ending Balance	79,488	33,250	35,195
Deferred federal and foreign income taxes | Cumulative Effect, Period Of Adoption, Adjustment
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	0
Ending Balance		0
Loan loss reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	2,146	3,383	3,383
Additions - Charged to Expense	3,648	0	0
Deductions - Amounts Written Off	0	(1,237)	0
Ending Balance	5,437	2,146	3,383
Loan loss reserves | Cumulative Effect, Period Of Adoption, Adjustment
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	(357)
Ending Balance		(357)
Fixed maturity securities
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	0
Additions - Charged to Expense	16,909
Deductions - Amounts Written Off	(50,043)
Ending Balance	2,580	0
Fixed maturity securities | Cumulative Effect, Period Of Adoption, Adjustment
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	35,714
Ending Balance		35,714
General Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	62,632	78,618	60,938
Additions - Charged to Expense	75,283	(4,251)	25,822
Deductions - Amounts Written Off	(57,308)	(11,735)	(8,141)
Ending Balance	123,161	62,632	$ 78,618
General Valuation Allowance | Cumulative Effect, Period Of Adoption, Adjustment
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Opening Balance	$ 42,554
Ending Balance		$ 42,554