Revision to Prior Year Information (Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income (loss)	$ 87,206	$ (136,506)	$ 480,682	$ 159,810
Future policy benefits			1,408,003	1,130,389
Reinsurance recoverables			(1,369,986)	(1,080,179)
Deferred policy acquisition costs			357,105	245,936
Income taxes			(115,247)	(58,322)
Cash flows from (used in) operating activities			(43,926)	924,750
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Policyholders’ account deposits			3,085,729	2,812,875
Cash flows from (used in) financing activities			$ 548,328	107,292
As Previously Reported
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income (loss)		(134,103)		164,556
Future policy benefits				1,107,838
Reinsurance recoverables				(1,060,191)
Deferred policy acquisition costs				248,479
Income taxes				(57,552)
Cash flows from (used in) operating activities				930,246
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Policyholders’ account deposits				2,807,379
Cash flows from (used in) financing activities				101,796
Revision
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income (loss)		$ (2,403)		(4,746)
Future policy benefits				22,551
Reinsurance recoverables				(19,988)
Deferred policy acquisition costs				(2,543)
Income taxes				(770)
Cash flows from (used in) operating activities				(5,496)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Policyholders’ account deposits				5,496
Cash flows from (used in) financing activities				$ 5,496