Net Assets in Liquidation - Allowed and Disputed General Unsecured Claims and Potential Term Loan Avoidance Action Claims (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Extinguishment of Debt [Line Items]
Beginning balance	$ 33,433,130	$ 35,332,115
New Allowed General Unsecured Claims		1,626,386
Disputed General Unsecured Claims resolved or disallowed	(9,500)	(3,525,371)
Ending balance	33,423,630	33,433,130
Allowed General Unsecured Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance		30,227,244
New Allowed General Unsecured Claims		1,626,386
Ending balance	31,853,630	31,853,630
Disputed General Unsecured Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	79,500	3,604,871
Disputed General Unsecured Claims resolved or disallowed	(9,500)	(3,525,371)
Ending balance	70,000	79,500
Term Loan Avoidance Action Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance			1,500,000
Ending balance	1,500,000	1,500,000	1,500,000
Maximum Amount of Unresolved Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	1,579,500	5,104,871
Disputed General Unsecured Claims resolved or disallowed	(9,500)	(3,525,371)
Ending balance	$ 1,570,000	$ 1,579,500