Liquidating Distributions - Schedule of Liquidating Distributions (Detail) - Liquidation Basis of Accounting [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions during the period	$ 432	$ 299,937
Less: Liquidating distributions payable as of beginning of period	(54,314)	(351,876)
Add: Liquidating distributions payable as of end of period	57,235	57,235
Total	$ 3,353	$ 5,296