Income Taxes Changes in Net Deferred Tax Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Deferred Income Tax Expense (Benefit)	$ (62,633)	$ (20,687)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	6,153	(5,570)
Deferred Tax from Change in Unrealized Gain Loss Atributible to Deferred Acquisition Costs and Value of Business Acquired	(26)	(103)
Income Tax Expense on Reclassification of Subsidiary NOL	0	288
Deferred Tax Liabilities, Net	(5,709)	0
Deferred tax assets, net	$ 0	$ 50,797	$ 76,869