Net Assets in Liquidation - Allowed and Disputed General Unsecured Claims and Potential Term Loan Avoidance Action Claims (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2014
Extinguishment of Debt [Line Items]
Beginning balance	$ 33,433,130
New Allowed General Unsecured Claims	0
Disputed General Unsecured Claims resolved or disallowed	0
Ending balance	33,433,130
Allowed General Unsecured Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	31,853,630
New Allowed General Unsecured Claims	0
Disputed General Unsecured Claims resolved or disallowed	0
Ending balance	31,853,630
Disputed General Unsecured Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	79,500
New Allowed General Unsecured Claims	0
Disputed General Unsecured Claims resolved or disallowed	0
Ending balance	79,500
Term Loan Avoidance Action Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	1,500,000
New Allowed General Unsecured Claims	0
Disputed General Unsecured Claims resolved or disallowed	0
Ending balance	1,500,000
Maximum Amount of Unresolved Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	1,579,500
New Allowed General Unsecured Claims	0
Disputed General Unsecured Claims resolved or disallowed	0
Ending balance	$ 1,579,500