Rental Revenues - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Leases, Income Statement, Lease Revenue [Abstract]
Accrued straight-line rental revenue	$ 1,055,000	$ 2,158,000	$ 2,370,000
Minimum rent, Lease incentive amortization	$ (800,000)	$ (800,000)	$ (700,000)