Investments (All Other Net Unrealized Investment Gains and Losses in AOCI) (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Accumulated Net Unrealized Investment Gain (Loss) Pre Tax [Member]	Sep. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Deferred Costs Policy Acquisition And Sales Inducements And Valuation Of Business Acquired, Pre Tax [Member]	Sep. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Policyholders Account Balances Pre Tax [Member]	Sep. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Deferred Income Tax Liability Benefit [Member]	Sep. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member]
Balance	$ 82,944	$ 70,867	$ 184,727	$ (66,452)	$ (8,187)	$ (39,363)	$ 70,725
Net investment gains (losses) on investments arising during the period			18,888	0	0	(6,618)	12,270
Reclassification adjustment for (gains) losses included in net income			(4,479)	0	0	1,566	(2,913)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs			0	4,690	0	(1,643)	3,047
Impact of net unrealized investment (gains) losses on policyholders' account balance			0	0	(311)	107	(204)
Balance	$ 82,944	$ 70,867	$ 199,136	$ (61,762)	$ (8,498)	$ (45,951)	$ 82,925