Investments (Balance of and Changes in AOCI Components) (USD $)	3 Months Ended				12 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014		Dec. 31, 2013
Accumulated other comprehensive income	$ 230,104,000				$ 178,691,000
AccumulatedTranslationAdjustmentMember
Accumulated other comprehensive income	(405,000)		402,000		(67,000)		403,000
Change in Other Comprehensive Income	(520,000)		(2,000)
Amount Reclassified from AOCI	0		0
Income Tax Benefit Expense	182,000		1,000
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated other comprehensive income	230,509,000	[1]	115,459,000	[1]	178,758,000	[1]	56,243,000	[1]
Change in Other Comprehensive Income	81,731,000	[1]	92,374,000	[1]
Amount Reclassified from AOCI	(2,114,000)	[1],[2],[3]	(1,272,000)	[1],[2],[4]
Income Tax Benefit Expense	(27,866,000)	[1]	(31,886,000)	[1]
Cash Flow Hedge Gain Loss To AOCI	36,000,000		(5,000,000)		12,000,000		(5,000,000)
Accumulated Other Comprehensive Income (loss) [Member]
Accumulated other comprehensive income	230,104,000		115,861,000		178,691,000		56,646,000
Change in Other Comprehensive Income	81,211,000		92,372,000
Amount Reclassified from AOCI	(2,114,000)	[2],[3]	(1,272,000)	[2],[4]
Income Tax Benefit Expense	$ (27,684,000)		$ (31,885,000)

[1] _____________ Includes cash flow hedges of $36 million and $12 million as of March 31, 2015 and December 31, 2014, respectively and ($5) million as of both March 31, 2014 and December 31, 2013, respectively.

[2] Positive amounts indicate gains/benefits reclassified out of AOCI. Negative amounts indicate losses/costs reclassified out of AOCI.

[3] All amounts are shown before tax.

[4] _____________ All amounts are shown before tax.