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	$ (485,424)
Realized investment gains (losses): All other investments	(35,056)
Income before income tax	24,536
Tax (expense) or benefit	(8,116)
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 (expense) or benefit	31
Net of tax	(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 (expense) or benefit	(131)
Net of tax	242
Predecessor
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)
Benefits and settlement expenses, net of reinsurance ceded		(266,575)	(727,428)
Realized investment gains (losses): All other investments		81,153	72,146
Net impairment losses recognized in earnings		(481)	(1,591)
Income before income tax		132,847	151,611
Tax (expense) or benefit		(44,325)	(49,062)
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 (expense) or benefit		13	234
Net of tax		(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 (expense) or benefit		(2,244)	(2,023)
Net of tax		$ 4,166	$ 3,756