Consolidated Statement of Net Assets (Liquidation Basis) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 24, 2013	Mar. 23, 2013	Jul. 31, 2012	Jul. 31, 2014 Liquidation Basis of Accounting	Jul. 31, 2013 Liquidation Basis of Accounting	Mar. 24, 2013 Liquidation Basis of Accounting	Mar. 23, 2013 Liquidation Basis of Accounting
Assets
Cash and cash equivalents		$ 19,824	$ 136,654	$ 12,241	$ 21,041
Land				2,500	2,948
Other assets				47	100
Total assets				14,788	24,089
Liabilities and Net Assets
Accrued expenses	14,745			44	133
Reserve for estimated costs during the Dissolution period				3,462	8,336
Other liabilities				1,786	1,983
Total liabilities				5,292	10,452
Net assets in liquidation				$ 9,496	$ 13,637	$ 15,140	$ 15,144
Shares outstanding				28,882	28,882
Net assets in liquidation per share				$ 0.33	$ 0.47