Income Taxes - Effective Income Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 25,617	$ 26,410	$ 39,144	$ 26,311
Effective income tax rate	20.10%	20.60%	20.70%	21.90%