Derivative Instruments and Hedging Activities - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Interest Rate Swap [Member]	Dec. 31, 2010 Interest Rate Swap [Member]
Derivative Financial Instruments [Line Items]
Notional amount, swap contract				$ 37,100,000
Variable interest rate, description			90 day LIBOR rate plus 1.63%
Variable interest rate			1.63%
Fixed interest rate			4.11%
Debt instrument basis period			90 days
Swap maturity date	September 2020
Fair value liability	370,000	3,000,000
Fair value of derivative instruments, asset	$ 1,180,000	$ 1,169,000