Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Loss reserve discounting	$ 6,312	$ 9,322
Unearned premium reserves	6,300	4,488
Allowance for doubtful accounts	1,700	1,995
Realized capital loss carry forward	1,424	1,424
Gross deferred tax assets	15,736	17,229
Valuation allowance		(64)
Gross deferred tax assets after valuation allowance	15,736	1,877
Deferred tax liabilities:
Deferred acquisition costs	7,064	3,138
Unrealized gain on securities	11,554	11,073
Depreciation	3,133	991
Other	2,752	86
Gross deferred tax liabilities	8,767	15,288
Net deferred tax assets (liabilities)	$ 8,767	$ 1,877