Income Taxes Components of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets, Gross [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Policyholder Liabilities	$ 33,719	$ 25,137
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	3,736	3,854
Deferred Tax Assets, Operating Loss Carryforwards	2,698	2,870
Deferred Tax Assets, Derivative Instruments	0	617
Deferred Tax Assets, Other	1,060	1,938
Deferred Tax Assets, Gross	41,213	34,416
Deferred Tax Liabilities, Gross [Abstract]
Deferred Tax Liabilities, Other Comprehensive Income	151,212	42,961
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost	26,813	55,810
Deferred Tax Liabilities, Value of Insurance in Force Acquired	551	2,181
Deferred Tax Liabilities, Property, Plant and Equipment	7,961	7,021
Deferred Tax Liabilities, Derivatives	4,386	0
Deferred Tax Liabilities, Other	2,663	1,892
Deferred Tax Liabilities, Gross	193,586	109,865
Deferred income taxes	152,373	$ 75,449
Uncertain Tax Positions, Reserves	600
Operating Loss Carryforwards	$ 11,900