Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating activities
Net income	$ 18,323	$ 28,945	$ 23,283
Adjustments to reconcile net income to net cash provided by operating activities:
Change in accounts receivable and unearned premium	2,678	(2,721)	22,939
Change in accrued investment income	(278)	108	(307)
Change in reinsurance recoverable on paid losses	(446)	692	4,458
Change in losses and loss expenses reserves net of reinsurance	47,229	23,568	6,325
Change in other assets, other liabilities and current income taxes	45,188	(8,063)	(28,299)
Amortization of net policy acquisition costs	47,387	18,085	21,314
Net policy acquisition costs deferred	(51,824)	(17,813)	(20,495)
Provision for deferred income taxes (benefits)	(3,866)	2,838	(1,819)
Bond amortization	1,865	3,030	3,388
Loss on sale of property and equipment	235	63	18
Depreciation	5,752	5,521	5,037
Net realized (gains) losses on investments	(19,686)	(23,228)	1,261
Compensation expense related to restricted stock	1,154	1,343	1,094
Net cash provided by operating activities	93,711	32,368	38,197
Investing activities
Purchases of fixed maturities and equity securities	(436,932)	(400,670)	(342,592)
Purchases of limited partnership interests	(1,097)	0	(409)
Distributions from limited partnerships	19,230	1,462	4,494
Proceeds from maturities	131,623	78,691	161,706
Proceeds from sales of fixed maturities	148,652	199,790	117,338
Proceeds from sales of equity securities	69,756	88,773	53,270
Net sales of short-term investments	500	11,258	746
Purchases of property and equipment	(6,661)	(7,725)	(7,662)
Proceeds from disposals of property and equipment	582	1,059	277
Net cash used in investing activities	(74,347)	(27,362)	(12,832)
Financing activities
Dividends paid to shareholders	(16,302)	(15,803)	(15,003)
Repurchase of common shares	(1,880)	0	0
Net cash used in financing activities	(18,182)	(15,803)	(15,003)
Effect of foreign exchange rates on cash and cash equivalents	522	235	(1,456)
Increase (decrease) in cash and cash equivalents	1,704	(10,562)	8,906
Cash and cash equivalents at beginning of year	62,976	73,538	64,632
Cash and cash equivalents at end of year	64,680	62,976	73,538
Supplemental Disclosures of Cash Flow Information
Cash paid for income taxes, net of refunds	0	10,173	14,500
Cash paid for interest	$ 456	$ 309	$ 286