Other Liabilities, Net - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Other Liabilities [Line Items]
Increase in revenue, accretion of below market leases		$ 1.0	$ 0.6	$ 0.4
Deferred liabilities		2.0
Reimbursement period		10 years
Reimbursement not to exceed per year		0.2
Increased property tax assessments, payment description		Property tax assessments, not to exceed $0.2 million per year until 2020
First payment of reimbursement	0.1
Financing Agreement
Schedule of Other Liabilities [Line Items]
Tax increment		$ 1.5