Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, maximum annual contributions per employee, percent	75.00%
Defined contribution plan, maximum annual bonus contributions per employee, percent	100.00%
Deferred compensation	$ 5,300	$ 5,905
Cash surrender value of life insurance	7,029	9,546
401(k) Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributions by employer	4,658	5,206	$ 4,205
Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributions by employer	$ 74	$ 71	$ 66