Deferred Policy Acquisition Costs - Schedule of Major Categories of the Deferred Policy Acquisition Costs (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Charges Insurers [Abstract]
Agents' commissions	$ 15,511	$ 13,418
Premium taxes	2,526	3,814
Deferred underwriting expenses	1,134	1,187
Total deferred policy acquisition costs	$ 19,171	$ 18,419