Investments (All Other Net Unrealized Investment Gains and Losses in AOCI) (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Accumulated Net Unrealized Investment Gain (Loss) Pre Tax [Member]	Jun. 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]	Jun. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Policyholders Account Balances Pre Tax [Member]	Jun. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Deferred Income Tax Liability Benefit [Member]	Jun. 30, 2014 Other Net Unrealized Investment Gains and Losses [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member]
Balance	$ 94,016	$ 70,867	$ 184,727	$ (66,452)	$ (8,187)	$ (39,363)	$ 70,725
Net investment gains (losses) on investments arising during the period			46,314	0	0	(16,215)	30,099
Reclassification adjustment for (gains) losses included in net income			(582)	0	0	203	(379)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs			0	(7,638)	0	2,671	(4,967)
Impact of net unrealized investment (gains) losses on policyholders' account balance			0	0	(2,303)	805	(1,498)
Balance	$ 94,016	$ 70,867	$ 230,459	$ (74,090)	$ (10,490)	$ (51,899)	$ 93,980