Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 3,986	$ 4,074
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization expense	1,100	948
Deferred federal income taxes	(183)	280
Net realized losses (gains)	(2,060)	227
Share-based payments expense	27	139
Change in ceded unearned premiums	(876)	(1,840)
Change in premiums receivable	(4,781)	(6,868)
Change in accounts receivable	561	(397)
Change in deferred policy acquisition costs	99	(371)
Change in unpaid losses and loss adjustment expenses	5,404	(1,749)
Change in unearned premiums	173	5,139
Change in reinsurance recoverable	(767)	(5,874)
Change in reinsurance balances payable	5,250	4,188
Change in current federal income tax payable (recoverable)	1,996	1,451
Change in all other liabilities	(173)	277
Change in all other assets	(917)	(935)
Net cash provided by operating activities	8,839	(1,311)
Cash flows from investing activities:
Purchases of property and equipment	(712)	(225)
Net transfers from (into) restricted cash	4,475	(211)
Purchases of investment securities	(48,523)	(58,384)
Maturities, sales and redemptions of investment securities	39,772	34,455
Net cash used in investing activities	(4,988)	(24,365)
Cash flows from financing activities:
Proceeds from exercise of employee stock options	33
Purchase of treasury shares	(563)	(1,293)
Net cash used in financing activities	(530)	(1,293)
Increase (decrease) in cash and cash equivalents	3,321	(26,969)
Cash and cash equivalents at beginning of period	79,632	114,446
Cash and cash equivalents at end of period	82,953	87,477
Supplemental cash flow information:
Interest paid	1,151	1,131
Income taxes paid	39	184
Supplemental schedule of non-cash investing activities:
Change in receivable for securities related to investment disposals that settled after the balance sheet date	1,793	9,486
Change in payable for securities related to investment purchases that settled after the balance sheet date	$ (5,179)	$ 1,813