CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 105,504	$ (60,555)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and other amortization	26,622	37,517
Deferred tax provision (benefit)	243	(21)
Realized investment gains, excluding impairment losses	(291)	(3,744)
Loss on repurchases of senior notes	837	0
Other	(45,745)	(31,862)
Change in certain assets and liabilities:
Accrued investment income	2,630	(5,920)
Prepaid reinsurance premium	(4,018)	(3,465)
Reinsurance recoverable on loss reserves	6,322	20,950
Reinsurance recoverable on paid losses	2,908	1,433
Premium receivable	9,367	5,250
Deferred insurance policy acquisition costs	(955)	(1,133)
Loss reserves	(385,807)	(457,535)
Premium deficiency reserve	(13,006)	(12,933)
Unearned premiums	13,721	3,578
Income taxes payable (current)	(689)	(179)
Net cash used in operating activities	(282,357)	(508,619)
Cash flows from investing activities:
Purchase of fixed maturities	(1,054,567)	(2,182,211)
Purchase of equity securities	(40)	(51)
Proceeds from sale of fixed maturities	718,938	483,171
Proceeds from maturity of fixed maturities	649,468	778,896
Net increase in payable for securities	(4)	(97,868)
Net change in restricted cash	237	(60,333)
Net cash provided by (used in) investing activities	314,032	(1,078,396)
Cash flows from financing activities:
Net proceeds from convertible senior notes	0	484,697
Common stock shares issued	0	663,392
Repurchases of long-term debt	(21,767)	(17,235)
Net cash (used in) provided by financing activities	(21,767)	1,130,854
Net increase (decrease) in cash and cash equivalents	9,908	(456,161)
Cash and cash equivalents at beginning of period	332,692	1,027,625
Cash and cash equivalents at end of period	$ 342,600	$ 571,464