Revenue Recognition - Schedule of Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Contract Asset
Beginning Balance	$ 10,441	$ 11,251
Net additions to sales return liability	36,028	36,223
Actual returns	(36,806)	(37,033)
Ending Balance	9,663	10,441
Contract Liability
Beginning Balance	(24,787)	(23,156)
Net additions to sales return liability	(117,969)	(120,102)
Actual returns	117,089	118,471
Ending Balance	$ (25,667)	$ (24,787)