Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Net deferred tax asset
Deferred tax assets	$ 43,291	$ 36,908
Deferred tax liabilities	(185,878)	(124,872)
Net deferred tax liability	(142,587)	(87,964)
Components of the net deferred tax asset
Contingency reserves	(181,031)	(119,896)
Unearned premium reserve	19,722	17,801
Nonvested shares	8,445	5,842
Fixed assets	4,702	5,879
Deferred policy acquisition costs	(4,690)	(4,035)
Start-up expenditures, net	3,705	4,158
Unearned ceding commissions	3,568	2,557
Unrealized (gain) loss on investments	2,181	(760)
Accrued expenses	775	519
Prepaid expenses	(157)	(181)
Loss reserves	170	126
Organizational expenditures	23	26
Net deferred tax liability	$ (142,587)	$ (87,964)