Leases - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Lessee Lease Description [Line Items]
Total operating lease costs	$ 10,309	$ 8,174	$ 7,551
Operating lease, weighted average remaining lease term	4 years 3 months 18 days
Operating lease, weighted average discount rate, percent	4.20%
Impairment on operating right-of-use assets	$ 9,373
Minimum
Lessee Lease Description [Line Items]
Lease expiration year	2020
Maximum
Lessee Lease Description [Line Items]
Lease expiration year	2026