Liquidating Distributions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Distribution Made to Limited Partner [Line Items]
Cash distributions payable	$ 1,800
Liquidation Basis of Accounting [Member]
Distribution Made to Limited Partner [Line Items]
Net reversal of liquidating distributions (liquidating distributions)	$ 0	$ (6,947)	$ 115,374