Liquidating Distributions - Schedule of Liquidating Distributions (Detail) - Liquidation Basis of Accounting [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions during the period	$ 40		$ 249
Less: Liquidating distributions payable at beginning of period	(14,645)		(7,714)
Add: Liquidating distributions payable at end of period	131,885		131,885
Total	$ 117,280	$ 199,922	$ 124,420	$ 210,200