Liquidating Distributions - Schedule of Liquidating Distributions (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions during the period	$ 52,475	$ 52,475
Less: Liquidating distributions payable as of beginning of period	(1,785)	(1,785)
Add: Liquidating distributions payable as of end of period	343,874	343,874
Total	$ 394,564	$ 394,564