Investments (All Other Net Unrealized Investment Gains and Losses in AOCI) (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Other Net Unrealized Investment Gains and Losses [Member] Accumulated Net Unrealized Investment Gain (Loss) Pre Tax [Member]		Mar. 31, 2014 Other Net Unrealized Investment Gains and Losses [Member] Deferred Costs Policy Acquisition And Sales Inducements And Valuation Of Business Acquired, Pre Tax [Member]	Mar. 31, 2014 Other Net Unrealized Investment Gains and Losses [Member] Policyholders Account Balances Pre Tax [Member]	Mar. 31, 2014 Other Net Unrealized Investment Gains and Losses [Member] Deferred Income Tax Liability Benefit [Member]	Mar. 31, 2014 Other Net Unrealized Investment Gains and Losses [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member]
Balance	$ 83,466	$ 70,867	$ 184,727	[1]	$ (66,452)	$ (8,187)	$ (39,363)	$ 70,725
Net investment gains (losses) on investments arising during the period			24,132	[1]	0	0	(8,450)	15,682
Reclassification adjustment for (gains) losses included in net income			(524)	[1]	0	0	182	(342)
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs			0	[1]	(3,128)	0	1,093	(2,035)
Impact of net unrealized investment (gains) losses on policyholders' account balance			0	[1]	0	(933)	325	(608)
Balance	$ 83,466	$ 70,867	$ 208,335	[1]	$ (69,580)	$ (9,120)	$ (46,213)	$ 83,422

[1] _____________ Includes cash flow hedges. See Note 5 for additional discussion of the Company’s cash flow hedges.