Long-Term Debt - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014 SecurityLoan	Nov. 08, 2011
Debt Disclosure [Abstract]
Line Of Credit Facility Minimum Liquidity Amount	$ 25,000,000.0
Line of Credit Facility, Remaining Borrowing Capacity	40,000,000
Long-term Debt	0
Maximum amount of the revolving credit facility		40,000,000.0
Maturity date for the revolving credit facility	Sep. 03, 2015
Period for which LIBOR election for amount of debt made	One, two or three months at a time
Maximum number of individual LIBOR loans	5
Minimum amount required for LIBOR rate election	1,000,000
Outstanding borrowings under credit facility	$ 0