DEFERRED POLICY ACQUISITION COSTS AND VALUE OF BUSINESS ACQUIRED (Details) - USD ($) $ in Thousands	1 Months Ended	8 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2015	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Balances and changes in DAC
Capitalization of commissions, sales, and issue expenses		$ 213,353
Amortization		(14,689)
Change in unrealized investment gains and losses		6,560
Balance, end of period		205,224	$ 205,224
Balances and changes in VOBA
Balance, beginning of period		1,276,886
Amortization		(62,023)
Change in unrealized gains and losses		52,301
Other		(6,046)
Balance, end of period	$ 1,276,886	1,261,118	1,261,118
Expected amortization of VOBA for the next five years
2015			39,882
2016			141,406
2017			129,471
2018			117,447
2019			99,473
Predecessor
Balances and changes in DAC
Balance, beginning of period	2,647,980	2,574,780	2,647,980	$ 2,721,687
Capitalization of commissions, sales, and issue expenses	22,513			288,592
Amortization	1,117			(195,605)
Change in unrealized investment gains and losses	(96,830)			(166,694)
Balance, end of period	2,574,780			2,647,980
Balances and changes in VOBA
Balance, beginning of period	646,590	$ 561,983	$ 646,590	848,528
Amortization	(5,189)			(61,704)
Change in unrealized gains and losses	(79,418)			(140,234)
Balance, end of period	$ 561,983			$ 646,590