Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 6,199	$ (1,457)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization expense	2,049	2,697
Deferred federal income taxes	(1,179)	(1,508)
Net realized losses (gains)	99	(2,773)
Share-based payments expense	221	136
Change in ceded unearned premiums	(15,664)	(5,032)
Change in premiums receivable	(8,632)	(11,942)
Change in accounts receivable	(823)	(65)
Change in deferred policy acquisition costs	2,829	(1,752)
Change in unpaid losses and loss adjustment expenses	32,657	30,935
Change in unearned premiums	11,665	19,141
Change in reinsurance recoverable	(22,938)	(6,038)
Change in reinsurance balances payable	13,584	4,880
Change in current federal income tax payable (recoverable)	125	(2,401)
Change in all other liabilities	(2,661)	(6,007)
Change in all other assets	2,050	5,219
Net cash provided by operating activities	19,581	24,033
Cash flows from investing activities:
Purchases of property and equipment	(576)	(846)
Net transfers into restricted cash	(3,231)	(2,709)
Purchases of investment securities	(69,144)	(85,417)
Maturities, sales and redemptions of investment securities	70,262	107,798
Net cash (used in) provided by investing activities	(2,689)	18,826
Cash flows from financing activities:
Activity under revolving credit facility, net	(1,473)
Proceeds from exercise of employee stock options	16
Purchase of treasury shares	(736)
Net cash used in financing activities	(2,193)
Increase in cash and cash equivalents	14,699	42,859
Cash and cash equivalents at beginning of period	141,666	85,145
Cash and cash equivalents at end of period	156,365	128,004
Supplemental cash flow information:
Interest paid	2,295	2,289
Income taxes paid (recovered)	3,309	2,212
Supplemental schedule of non-cash investing activities:
Change in receivable for securities related to investment disposals that settled after the balance sheet date	(155)	217
Change in payable for securities related to investment purchases that settled after the balance sheet date	$ 17,702	$ 6,776