Liquidating Distributions - Schedule of Liquidating Distributions (Detail) - Liquidation Basis of Accounting [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions during the period	$ 9	$ 12
Less Liquidating distributions payable at beginning of period	(1,823)	(1,825)
Add Liquidating distributions payable at end of period	1,813	$ 1,813
Net reversal	$ (1)