Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Fixed-maturity securities, available for sale, at fair value (amortized cost: $129,680 and $110,738, respectively)	$ 133,113	$ 112,151
Equity securities, available for sale, at fair value (cost: $22,174 and $17,248, respectively)	22,872	17,649
Other investments	16,450	16,228
Total investments	172,435	146,028
Cash and cash equivalents	296,576	293,398
Accrued interest and dividends receivable	1,338	1,133
Premiums receivable	18,033	14,674
Prepaid reinsurance premiums	15,217	28,066
Deferred policy acquisition costs	14,184	14,071
Property and equipment, net	12,931	13,132
Other assets	19,101	15,814
Total assets	549,815	526,316
Liabilities and Stockholders' Equity
Losses and loss adjustment expenses	43,597	43,686
Unearned premiums	156,959	171,907
Advance premiums	17,567	4,504
Assumed reinsurance balances payable	994	4,660
Accrued expenses	8,567	4,032
Dividends payable	3,190	19
Income taxes payable	8,592	543
Deferred income taxes, net	2,586	2,740
Long-term debt	127,559	126,932
Other liabilities	11,492	6,772
Total liabilities	381,103	365,795
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock
Common stock, (no par value, 40,000,000 shares authorized, 10,970,108 and 10,939,268 shares issued and outstanding in 2014 and 2013, respectively)
Additional paid-in capital	44,148	48,966
Retained income	122,026	110,441
Accumulated other comprehensive income, net of taxes	2,538	1,114
Total stockholders' equity	168,712	160,521
Total liabilities and stockholders' equity	549,815	526,316
7% Series A Cumulative Convertible Preferred Stock [Member]
Stockholders' equity:
Preferred stock
Series B Preferred Stock [Member]
Stockholders' equity:
Preferred stock