Investments (Net Unrealized Investment Gains and Losses on Fixed Maturity Securities on which an OTTI loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	$ 178,691
Accumulated other comprehensive income (loss), ending balance	64,805	$ 178,691
Net Unrealized Gains (Losses) on Investments | Fixed maturity securities on which an OTTI loss has been recognized
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	5,333	4,498	$ (618)
Net investment gains (losses) on investments arising during the period	107	996	1,053
Reclassification adjustment for (gains) losses included in net income	(251)	(161)	4,114
Reclassification adjustment for OTTI losses excluded from net income	7	0	(51)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0	0	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances	0	0	0
Accumulated other comprehensive income (loss), ending balance	5,196	5,333	4,498
Deferred Policy Acquisition Costs and Other Costs | Fixed maturity securities on which an OTTI loss has been recognized
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	(2,538)	(3,324)	295
Net investment gains (losses) on investments arising during the period	0	0	0
Reclassification adjustment for (gains) losses included in net income	0	0	0
Reclassification adjustment for OTTI losses excluded from net income	0	0	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	1,188	786	(3,619)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances	0	0	0
Accumulated other comprehensive income (loss), ending balance	(1,350)	(2,538)	(3,324)
Future Policy Benefits and Policyholders' Account Balances | Fixed maturity securities on which an OTTI loss has been recognized
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	1,228	1,819	563
Net investment gains (losses) on investments arising during the period	0	0	0
Reclassification adjustment for (gains) losses included in net income	0	0	0
Reclassification adjustment for OTTI losses excluded from net income	0	0	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0	0	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances	(114)	(591)	1,256
Accumulated other comprehensive income (loss), ending balance	1,114	1,228	1,819
Deferred Income Tax (Liability) Benefit | Fixed maturity securities on which an OTTI loss has been recognized
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	(1,440)	(1,079)	(115)
Net investment gains (losses) on investments arising during the period	(37)	(348)	(369)
Reclassification adjustment for (gains) losses included in net income	88	56	(1,440)
Reclassification adjustment for OTTI losses excluded from net income	(2)	0	18
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(416)	(275)	1,266
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances	40	206	(439)
Accumulated other comprehensive income (loss), ending balance	(1,767)	(1,440)	(1,079)
Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses) | Fixed maturity securities on which an OTTI loss has been recognized
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance	2,583	1,914	125
Net investment gains (losses) on investments arising during the period	70	648	684
Reclassification adjustment for (gains) losses included in net income	(163)	(105)	2,674
Reclassification adjustment for OTTI losses excluded from net income	5	0	(33)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	772	511	(2,353)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders’ account balances	(74)	(385)	817
Accumulated other comprehensive income (loss), ending balance	$ 3,193	$ 2,583	$ 1,914