Derivative Financial Instruments - Additional Informations (Detail) (USD $)						0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Interest rate cap	Dec. 31, 2013 Minimum Interest rate cap	Dec. 31, 2013 Maximum Interest rate cap	Mar. 14, 2014 Subsequent Event Interest rate cap
Derivative [Line Items]
Interest rate cap agreement, notional amount	$ 131,377,000	$ 21,077,000	$ 121,500,000			$ 50,000,000
Interest rate cap agreement, strike price				1.50%	3.50%	1.25%
Interest rate cap agreement, premium			$ 300,000			$ 400,000
Interest rate cap agreement, expiration year			2016
Interest rate cap agreement, expiration date						Mar. 01, 2017