Consolidated Statements of Cash Flows - Successor [Member] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income attributable to common stockholders	$ 68,062	$ 497,406
Net (loss) gain	292	357
Net income	67,770	497,049
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	635	1,489
Amortization of bond premium and discount	(56,353)	(64,478)
Share-based compensation	2,777	1,274
Deferred income taxes	(493)	(124)
Current income taxes	(977)	(4,031)
Unearned premiums, net	(115,760)	(134,487)
Losses and loss expenses, net	857,605	(299,879)
Ceded premiums payable	(7,767)	(2,434)
Investment income due and accrued	182	(264)
Premium receivables	62,761	63,683
Accrued interest payable	24,581	34,867
Amortization of insurance intangible assets	89,903	75,520
Net mark-to-market (gains) losses	(16,336)	(6,968)
Net realized investment gains	(15,999)	(48,748)
Other-than-temporary impairment charges	16,775	4,139
Net realized (gains) losses on extinguishment of debt	(4,821)	1,339
Variable interest entity activities	18,176	(59,565)
Other, net	(52,350)	(20,043)
Net cash provided by operating activities	870,309	38,339
Cash flows from investing activities:
Proceeds from sales of bonds	305,100	705,104
Proceeds from matured bonds	585,274	469,630
Purchases of bonds	(1,415,796)	(1,385,652)
Proceeds from sales of other invested assets	35,433	96,691
Purchases of other invested assets	(145,788)	(81,696)
Change in short-term investments	(110,433)	162,995
Loans, net	591	40
Change in swap collateral receivable	(90,966)	19,710
Other, net	6,353	(1,477)
Net cash (used in) investing activities	(830,232)	(14,655)
Cash flows from financing activities:
Paydowns of a secured borrowing	(13,630)	0
Proceeds from warrant exercises	2	2
Warrants Purchased During Period Dollars	(1,610)	0
Payments for investment agreement draws	(17,989)	(49,872)
Payments for extinguishment of long-term debt	(19,550)	(13,752)
Net cash (used in) financing activities	(52,777)	(63,622)
Net cash flow	(12,700)	(39,938)
Cash and cash equivalents at beginning of period	35,744	73,903
Cash and cash equivalents end of period	23,044	33,965
Supplemental disclosure of cash flow information:
Income taxes	7,662	9,685
Interest on secured borrowing	2,053	0
Interest on investment agreements	$ 299	$ 159