Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net income (loss)	$ (34,075)	$ 18,323	$ 28,945
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Change in accounts receivable and unearned premium	(3,904)	2,678	(2,721)
Change in accrued investment income	(199)	(278)	108
Change in reinsurance recoverable on paid losses	956	(446)	692
Change in losses and loss expenses reserves, net of reinsurance	117,027	47,229	23,568
Change in other assets, other liabilities and current income taxes	8,204	49,221	(8,063)
Amortization of net policy acquisition costs	54,981	47,387	18,085
Net policy acquisition costs deferred	(55,940)	(51,824)	(17,813)
Provision for deferred income tax expense (benefit)	(18,794)	(3,866)	2,838
Bond amortization	184	1,865	3,030
Loss on sale of property and equipment	0	235	63
Depreciation	6,102	5,752	5,521
Net realized (gains) losses on investments	25,691	(19,686)	(23,228)
Compensation expense related to restricted stock	475	1,154	1,343
Net cash provided by operating activities	100,708	97,744	32,368
Investing activities
Purchases of fixed maturities and equity securities	(415,326)	(436,932)	(400,670)
Purchases of limited partnership interests	(450)	(1,097)	0
Distributions from limited partnerships	6,869	19,230	1,462
Proceeds from maturities	64,035	131,623	78,691
Proceeds from sales of fixed maturities	241,429	148,652	199,790
Proceeds from sales of equity securities	149,195	69,756	88,773
Net sales of short-term investments	0	500	11,258
Purchase of insurance company-owned life insurance	(10,000)	0	0
Purchase of commercial mortgage loans	(6,672)	0	0
Purchases of property and equipment	(5,439)	(6,661)	(7,725)
Proceeds from disposals of property and equipment	10	582	1,059
Net cash provided by (used in) investing activities	23,651	(74,347)	(27,362)
Financing activities
Dividends paid to shareholders	(16,835)	(16,302)	(15,803)
Repurchase of common shares	(4,596)	(1,880)	0
Net cash used in financing activities	(21,431)	(18,182)	(15,803)
Effect of foreign exchange rates on cash and cash equivalents	(830)	522	235
Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	102,098	5,737	(10,562)
Cash, cash equivalents and restricted cash and cash equivalents at beginning of year	68,713	62,976	73,538
Cash, cash equivalents and restricted cash and cash equivalents at end of year	170,811	68,713	62,976
Supplemental Disclosures of Cash Flow Information
Cash paid for income taxes, net of refunds	9,500	0	10,173
Cash paid for interest	$ 504	$ 456	$ 309