1. Basis of Presentation (Detail) - Accrued Cost of Liquidation (USD $) In Thousands, unless otherwise specified	2 Months Ended	3 Months Ended	54 Months Ended
	May 31, 2012	Jun. 30, 2011	Dec. 31, 2016
Liquidation Accrual	$ (75)	$ 250	$ 5,680
Salaries, wages and benefits
Liquidation Accrual			1,117
Lease expense
Liquidation Accrual			205
Legal, accounting, board and other professional fees
Liquidation Accrual			1,407
Litigation related expenses
Liquidation Accrual			2,100
Outside services and other expenses
Liquidation Accrual			538
Insurance
Liquidation Accrual			$ 313