Liquidating Distributions - Schedule of Liquidating Distributions (Detail) (Liquidation Basis of Accounting [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Liquidation Basis of Accounting [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions during the period	$ 240,640		$ 244,188
Less: Liquidating distributions payable at beginning of period	(248,763)		(42,111)
Add: Liquidating distributions payable at end of period	6,033		6,033
Total	$ (2,090)	$ 1,067,130	$ 208,110	$ 1,167,938