Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Fixed maturity securities, at fair value	$ 311,309	$ 829,577
Short-term investments, at fair value	611,267	76,502
Cash and cash equivalents	18,567	20,224
Accrued investment income	1,693	6,387
Premiums receivable	29,249	32,559
Ceded unearned premium	35,200	29,821
Reinsurance recoverable	185,644	183,562
Deferred income taxes	2,797
Deferred acquisition costs	25,213	26,182
Funds on deposit	36,915	42,088
Accrued premium	35,980	42,886
Other assets	18,431	25,849
Unpaid losses and loss adjustment expenses	727,278	725,244
Unearned premiums	151,738	146,096
Ceded premiums payable	22,291	13,386
Funds held	61,642	76,806
Other liabilities	14,967	18,601
Deferred income taxes		8,767
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	9,623,413	9,505,906
Common stock, shares outstanding	9,623,413	9,505,906
VIE
Fixed maturity securities, at fair value	9,846	9,499
Short-term investments, at fair value	1,952	2,645
Cash and cash equivalents	439	507
Accrued investment income	56	52
Premiums receivable	383	498
Ceded unearned premium	218	351
Reinsurance recoverable	4,659	5,039
Deferred income taxes	121	0
Deferred acquisition costs	715	1,100
Funds on deposit	114	231
Accrued premium	0	0
Other assets	724	1,255
Unpaid losses and loss adjustment expenses	8,398	8,900
Unearned premiums	2,878	4,325
Ceded premiums payable	326	67
Funds held	99	113
Other liabilities	0	0
Deferred income taxes	$ 0	$ 30