Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 43,395	$ 25,906
Adjustments to reconcile net income to net cash provided by operating activities:
Bad debt expense	363	224
Depreciation	745	625
Amortization of stock-based compensation	4,639	2,559
Amortization of original issue discount	349
Accretion of deferred credit	(349)
Net realized (gains) losses on investments	15,982	12,296
Net change in unrealized (gains) losses on investments	(7,912)	(11,490)
Loss (gain) on disposal of assets	5
Net foreign currency (gains) losses on investments		(23)
Amortization of premium/accretion of discount, net	1,063	(5)
Deferred income taxes	5,728	6,806
Excess tax (benefits) shortfall from stock-based compensation	(52)	1,765
Net change in assets and liabilities relating to operating activities:
Restricted cash and cash equivalents	30,409	(16,823)
Prepaid reinsurance premiums	(10,585)	(5,804)
Reinsurance recoverables	14,291	4,906
Reinsurance receivables, net	66	24,677
Premiums receivable, net	(2,634)	(10,414)
Accrued investment income	(898)	274
Other receivables	(535)	(766)
Income taxes recoverable	(11,904)	(406)
Deferred policy acquisition costs, net	329	(5,023)
Purchase of trading securities	(26,009)	(254,270)
Proceeds from sales of trading securities	102,661	310,943
Other assets	(1,453)	362
Unpaid losses and loss adjustment expenses	(35,867)	(14,541)
Unearned premiums	19,372	48,872
Accounts payable	(505)	(62)
Reinsurance payable, net	33,314	36,437
Income taxes payable	803	(14,482)
Other liabilities and accrued expenses	4,124	3,274
Advance premium	8,670	(922)
Net cash provided by (used in) operating activities	187,605	144,895
Cash flows from investing activities:
Proceeds from sale of property and equipment	5	18
Purchase of property and equipment	(1,086)	(2,365)
Purchases of equity securities, available for sale	(70,351)
Purchases of fixed maturities, available for sale	(306,169)
Proceeds from sales of equity securities, available for sale	390
Proceeds from sales of fixed maturities, available for sale
Maturities of fixed maturity securities, available for sale	9,021
Net cash provided by (used in) investing activities	(368,190)	(2,347)
Cash flows from financing activities:
Bank overdraft increase (decrease)	(3,785)	3,713
Preferred stock dividend	(15)	(264)
Common stock dividend	(9,576)	(7,225)
Issuance of common stock		207
Purchase of treasury stock	(32,365)
Payments related to tax withholding for share-based compensation	(2,728)	(121)
Excess tax benefits (shortfall) from stock-based compensation	51	(1,765)
Repayment of debt	(1,103)	(1,103)
Proceeds from borrowings	20,000
Net cash provided by (used in) financing activities	(29,521)	(6,558)
Net increase (decrease) in cash and cash equivalents	(210,106)	135,990
Cash and cash equivalents at beginning of period	347,392	229,685
Cash and cash equivalents at end of period	137,286	365,675
Supplemental cash and non-cash flow disclosures:
Interest paid	742	327
Income taxes paid	36,564	22,453
Non-cash transfer of investments from trading to available for sale portfolio	$ 4,004