Bankruptcy Disclosures - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended		12 Months Ended	1 Months Ended
	May 27, 2010	Nov. 20, 2009	Dec. 31, 2008	Jul. 23, 2010 Minimum	Jun. 30, 2009 Minimum	Dec. 31, 2008 11% Senior Unsecured Notes Due 2013
Loss Contingencies [Line Items]
Compliance description			The delay in the quarterly report on Form 10-Q caused a noncompliance with the covenant in the indenture governing the $210.0 million of 11% unsecured senior notes due 2013 (the "2008 Senior Notes").
Senior notes covenant amount						$ 210.0
Debt interest rate						11.00%
Percentage of principal amount					75.00%
Date of petition for bankruptcy filed with the bankruptcy court		Nov. 20, 2009
Actions taken	On May 27, 2010, the Bankruptcy Court entered an order confirming and approving the plan of reorganization (the "Final Chapter 11 Plan").
Percentage of common shares outstanding upon emergence				50.00%