Liquidating Distributions - Schedule of Liquidating Distributions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Equity [Abstract]
Distributions during the three/six months ended September 30, 2013	$ 6,484		$ 16,916
Less: Liquidating distributions payable	(25,046)		(16,555)
Add: Liquidating distributions payable at September 30, 2013	100,447		100,447
Total liquidating distributions	$ 81,885	$ 35,307	$ 100,808	$ 55,149