Schedule V - Valuation and Qualifying Accounts (Details) - Valuation Allowance on Mortgage Loans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ (7,518)	$ (8,427)	$ (14,142)
Charged to costs and expenses	(3,165)	278	(4,846)
Translation adjustment	0	0	0
Write-offs/payments/other	2,444	631	10,561
Ending balance	$ (8,239)	$ (7,518)	$ (8,427)