Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	9 Months Ended
	Sep. 10, 2013	Sep. 30, 2014	Mar. 31, 2014
Commitment And Contingencies [Line Items]
Available unused commitment		$ 7,177
Premium Tax [Member]
Commitment And Contingencies [Line Items]
Loss contingency amount		1,754
Proposed premium tax adjustment with interest	1,913
Accrued amount			$ 0
Loss contingency related to credit disallowance		The auditor's proposed adjustments primarily relate to the disallowance of the entire amount of $1,754 in Florida salary credits applicable to that period.