CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments:
Fixed maturity securities-held-to-maturity, at amortized cost (fair value $561,179 and $627,349 in 2013 and 2012, respectively)	$ 536,583	$ 583,287
Fixed maturity securities-available-for-sale, at fair value (cost $244,409 and $144,514 in 2013 and 2012, respectively)	237,877	149,139
Equity securities-available-for-sale, at fair value (cost $9,482 and $7,000 in 2013 and 2012, respectively)	9,302	6,766
Short-term investments	84,422	68,924
Other investments	10,591
Total investments	878,775	808,116
Cash and cash equivalents	123,077	92,676
Amounts recoverable from reinsurers	75,326	101,352
Premiums receivable, net of allowance	171,579	141,950
Deferred income taxes	33,645	29,521
Accrued interest receivable	11,242	10,392
Property and equipment, net	7,549	7,711
Deferred policy acquisition costs	19,171	18,419
Other assets	8,637	10,809
Total assets	1,329,001	1,220,946
Liabilities:
Reserves for loss and loss adjustment expenses	614,557	570,450
Unearned premiums	164,296	140,528
Reinsurance premiums payable	607	456
Amounts held for others	35,739	41,033
Policyholder deposits	44,620	39,088
Insurance-related assessments	25,428	22,244
Accounts payable and other liabilities	26,940	25,649
Payable for investments purchased		276
Total liabilities	912,187	839,724
Shareholders' equity:
Common stock: Voting-$0.01 par value authorized shares-50,000,000 in 2013 and 2012; 19,855,430 and 19,513,476 shares issued and 18,597,180 and 18,255,226 shares outstanding in 2013 and 2012, respectively	198	195
Additional paid-in capital	192,537	187,401
Treasury stock at cost (1,258,250 shares in 2013 and 2012)	(22,370)	(22,370)
Accumulated earnings	250,744	213,017
Accumulated other comprehensive income (loss)	(4,295)	2,979
Total shareholders' equity	416,814	381,222
Total liabilities and shareholders' equity	$ 1,329,001	$ 1,220,946