Income Taxes - Balance Sheet Location of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 25,270	$ 17,638	$ 10,942	$ 9,594
Deferred tax assets, net
Income Tax Contingency [Line Items]
Unrecognized tax benefits	0	486
Income taxes payable
Income Tax Contingency [Line Items]
Unrecognized tax benefits	1,038	0
Income tax liability
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 24,232	$ 17,152