Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities:
Net income	$ 44,829	$ 27,847
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation & amortization	2,482	1,953
Deferred income taxes	49	(2,457)
Net realized (gains) losses	(5,306)	(8,159)
Net other-than-temporary losses recognized in earnings		42
Changes in assets and liabilities:
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	(23,233)	(5,110)
Reserves for losses and loss adjustment expenses	92,731	19,336
Prepaid reinsurance premiums	1,518	(30,031)
Unearned premiums	87,547	87,161
Premiums receivable	(92,097)	(74,213)
Deferred policy acquisition costs	(9,968)	(4,104)
Accrued investment income	(713)	(1,104)
Reinsurance balances payable	(7,991)	17,870
Current income tax payable, net	2,437	4,191
Other	(14,137)	15,263
Net cash provided by (used in) operating activities	78,148	48,485
Fixed maturities
Redemptions and maturities	103,838	121,340
Sales	200,325	411,634
Purchases	(445,533)	(491,255)
Equity securities
Sales	10,832	11,439
Purchases	(38,007)	(38,094)
Change in payable for securities	10,991	(32,632)
Net change in short-term investments	69,881	29,062
Purchase of property and equipment	(4,986)	(4,855)
Net cash provided by (used in) investing activities	(92,659)	6,639
Financing activities:
Proceeds of stock issued from employee stock purchase plan	453	374
Proceeds of stock issued from exercise of stock options	153	1,126
Net cash provided by (used in) financing activities	606	1,500
Increase (decrease) in cash	(13,905)	56,624
Cash at beginning of year	86,509	45,336
Cash at end of period	72,604	101,960
Supplemental cash information:
Income taxes paid, net	18,918	9,223
Interest paid	8,084	4,025
Issuance of stock to directors	$ 438	$ 400