Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Contingency [Line Items]
Transition tax			$ 57,895,000	$ 59,114,000
Expected future taxable income to realize deferred tax assets	$ 154,715,000
Adjusted transition tax				$ 57,895,000
Adjusted transition tax, cumulative unpaid portion	41,452,000
Undistributed earnings of foreign subsidiaries	303,171,000
Non US subsidiary cash and cash equivalents	180,951,000
Undistributed earnings from foreign subsidiaries not subject to transition tax	13,019,000
Intercompany dividends	175,000,000	$ 150,000,000	130,000,000
Withholding tax	0
Income tax penalties and interest accrued	4,782,000	3,631,000
Income tax penalties and interest expense	1,151,000	1,176,000	(110,000)
Decrease in unrecognized tax benefit expected to settle in next twelve months	4,544,000
Unrecognized tax benefits that would impact effective tax rate	23,883,000	$ 16,685,000	$ 10,344,000
Income taxes payable
Income Tax Contingency [Line Items]
Adjusted transition tax, cumulative unpaid portion	2,586,000
Income tax liability
Income Tax Contingency [Line Items]
Adjusted transition tax, cumulative unpaid portion	38,866,000
Income Tax Expense (Benefit)
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefit expected to settle in next twelve months	4,268,000
Interest Expense
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefit expected to settle in next twelve months	$ 1,153,000