Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Mar. 31, 2020
Payables and Accruals [Abstract]
Accrued marketing costs	$ 37,420	$ 34,450
Accrued compensation costs	8,025	13,393
Accrued broker commissions	986	1,491
Income taxes payable	2,902	3,210
Accrued professional fees	3,700	4,183
Accrued production costs	3,187	5,628
Accrued sales tax	930	1,917
Other accrued liabilities	7,973	6,491
Other accrued liabilities	$ 65,123	$ 70,763