Location and Fair Values of Derivatives in Condensed Consolidated Statements of Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Expense (Income) Recognized on Derivatives	$ 320	$ (214)
Interest Rate Cap | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Expense (Income) Recognized on Derivatives	332	101
Green Bay Option | Realized (gain) losses on derivative instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Expense (Income) Recognized on Derivatives	(12)	3,368
May 2005 Option | Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Expense (Income) Recognized on Derivatives		$ (3,683)