CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 235,030	$ 1,069,582
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	44,324	38,361
Deferred tax expense (benefit)	111,191	(698,177)
Realized investment gains, net	(8,984)	(27,133)
Excess tax benefits related to share-based compensation	(100)	(2,113)
Loss on debt extinguishment	31,071	0
Payment of original issue discount-convertible junior subordinated debentures	(41,540)	0
Payment of original issue discount-convertible senior notes	(11,250)	0
Change in certain assets and liabilities:
Accrued investment income	(2,086)	(6,343)
Prepaid insurance premium	95	47,436
Reinsurance recoverable on loss reserves	(2,376)	19,093
Reinsurance recoverable on paid losses	(1,313)	2,149
Premium receivable	1,048	5,863
Deferred insurance policy acquisition costs	(2,167)	(2,757)
Profit commission receivable	(2,005)	91,500
Loss reserves	(357,919)	(416,864)
Premium deficiency reserve	0	(23,751)
Unearned premiums	41,353	61,705
Return premium accrual	(12,800)	(6,400)
Income taxes payable - current	822	752
Other	9,235	(17,872)
Net cash provided by operating activities	31,629	135,031
Purchases of investments:
Fixed maturities	(1,105,995)	(1,970,402)
Equity securities	(4,315)	(2,593)
Proceeds from sales of fixed maturities	718,894	1,527,680
Proceeds from maturity of fixed maturities	432,557	432,328
Proceeds from sale of equity securities	6,425	0
Net increase in payable for securities	3,376	48,120
Net decrease in restricted cash	0	17,212
Additions to property and equipment	(4,969)	(2,835)
Net cash provided by investing activities	45,973	49,510
Cash flows from financing activities:
Proceeds from issuance of long-term debt	573,094	0
Purchase of convertible senior notes	(363,778)	0
Purchase of convertible junior subordinated debentures-liability component	(91,110)	0
Purchase of convertible junior subordinated debentures-equity component	(9,750)	0
Purchase of common stock	(91,597)	0
Payment of debt issuance costs	(938)	0
Excess tax benefits related to share-based compensation	100	2,113
Net cash provided by financing activities	16,021	2,113
Net increase in cash and cash equivalents	93,623	186,654
Cash and cash equivalents at beginning of period	181,120	197,882
Cash and cash equivalents at end of period	$ 274,743	$ 384,536