Value of Business Acquired (Balance of and Changes in VOBA) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Present Value of Future Insurance Profits [Roll Forward]
Balance, beginning of year	$ 39,738	$ 43,500	$ 43,090
Amortization - Impact of assumption and experience unlocking and true-ups	3,412	5,412	6,376
Amortization- All Other	(10,477)	(11,181)	(11,593)
Interest	2,436	2,615	2,762
Change in unrealized investment gains and losses	1,163	(608)	2,865
Ceded VOBA upon Reinsurance Treaty with Prudential Insurance	(2,632)	0	0
Balance, end of year	$ 33,640	$ 39,738	$ 43,500
Weighted Average Remaining Life VOBA	5 years 2 months 19 days
Interest Accrual Rate VOBA	6.05%	6.10%	6.14%