Schedule II - Schedule of Valuation and Qualifying Accounts (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Monroe Property [Member]
Rent reserves	$ 4.8	$ 1.6
Interest reserves	2.7	2.9
Acquisition-related costs on consummated deals	1.9
Denham Springs, LA [Member]
Rent reserves		3.7
Interest reserves		2.9
Full reserve for net deferred tax asset		$ 2.1