ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) (USD $) In Thousands, unless otherwise specified	2 Months Ended	1 Months Ended	3 Months Ended
	Mar. 31, 2015	Jan. 31, 2015	Mar. 31, 2014
Reclassifications out of accumulated other comprehensive income (loss)
Benefits and settlement expenses, net of reinsurance ceded	$ (486,299)
Realized investment gains (losses): All other investments	(35,056)
Income before income tax	92,827
Tax benefit (expense)	(29,966)
Net Income	62,861
Gains and losses on derivative instruments | Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Benefits and settlement expenses, net of reinsurance ceded	(90)
Income before income tax	(90)
Tax benefit (expense)	31
Net Income	(59)
Unrealized gains and losses on available-for-sale securities | Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Realized investment gains (losses): All other investments	373
Income before income tax	373
Tax benefit (expense)	(131)
Net Income	242
Predecessor
Reclassifications out of accumulated other comprehensive income (loss)
Benefits and settlement expenses, net of reinsurance ceded		(267,287)	(728,519)
Realized investment gains (losses): All other investments		81,153	72,114
Net impairment losses recognized in earnings		(481)	(1,591)
Income before income tax		1,182	125,205
Tax benefit (expense)		327	(41,566)
Net Income		1,509	83,639
Predecessor | Gains and losses on derivative instruments | Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Benefits and settlement expenses, net of reinsurance ceded		(36)	(670)
Income before income tax		(36)	(670)
Tax benefit (expense)		13	234
Net Income		(23)	(436)
Predecessor | Unrealized gains and losses on available-for-sale securities | Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Realized investment gains (losses): All other investments		6,891	7,370
Net impairment losses recognized in earnings		(481)	(1,591)
Income before income tax		6,410	5,779
Tax benefit (expense)		(2,244)	(2,023)
Net Income		4,166	3,756
Predecessor | Minimum Pension Liability Adjustment | Amount Reclassified from Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive income (loss)
Amortization of net actuarial gain/(loss)		(808)
Amortization of prior service credit/(cost)		31
Amortization of transition asset/(obligation)		5
Income before income tax		(772)
Tax benefit (expense)		270
Net Income		$ (502)