Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 647	$ 3,986
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	1,238	1,100
Deferred federal income taxes	(1,146)	(183)
Net realized (gains) losses	4,835	(2,060)
Share-based payments expense	44	27
Change in ceded unearned premiums	(442)	(876)
Change in premiums receivable	(4,114)	(4,781)
Change in accounts receivable	(296)	561
Change in deferred policy acquisition costs	8	99
Change in unpaid losses and loss adjustment expenses	2,584	5,404
Change in unearned premiums	(72)	173
Change in reinsurance recoverable	(31,441)	(767)
Change in reinsurance balances payable	3,511	5,250
Change in current federal income tax recoverable	1,398	1,996
Change in all other liabilities	3,701	(173)
Change in all other assets	330	(917)
Net cash provided by operating activities	(19,215)	8,839
Cash flows from investing activities:
Purchases of property and equipment	(570)	(712)
Purchases of investment securities	(38,619)	(48,523)
Maturities, sales and redemptions of investment securities	48,822	39,772
Net cash used in investing activities	9,633	(9,463)
Cash flows from financing activities:
Proceeds from exercise of employee stock options		33
Purchase of treasury shares	(377)	(563)
Net cash used in financing activities	(377)	(530)
Increase (decrease) in cash and cash equivalents	(9,959)	(1,154)
Cash, cash equivalents and restricted cash at beginning of period	67,633	86,959
Cash, cash equivalents and restricted cash at end of period	$ 57,674	$ 85,805