Income Taxes - Summary of Net Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deferred tax assets:    
Net operating loss carryforwards $ 6,180 $ 9,949
Stock option compensation 402 516
Unearned premiums and loss and loss adjustment expense reserves 5,614 4,898
Goodwill and identifiable intangible assets 5,404 6,311
Alternative minimum tax (“AMT”) credit carryforwards 2,004 1,784
Accrued expenses and other nondeductible items 1,201 1,182
Other 3,127 1,875
Deferred Tax Assets, Gross, Total 23,932 26,515
Deferred tax liabilities:    
Deferred acquisition costs (1,211) (1,016)
Identifiable intangible assets (1,872) (1,872)
Net unrealized change on investments (2,105) (1,181)
Other (460)  
Deferred tax liabilities, gross (5,648) (4,069)
Total net deferred tax asset 18,284 22,446
Less: Valuation allowance (1,763) (24,224)
Net deferred tax asset (liability) $ 16,521 $ (1,778)