Fair Value Measurements - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands		Sep. 30, 2021	Mar. 31, 2021
Carrying Value
ASSETS
Cash and cash equivalents	[1]	$ 75,303	$ 73,295
Restricted cash and cash equivalents		6,261	5,280
Total		81,564	78,575
LIABILITIES
Contingent consideration related to acquisitions		533	533
Total		533	533
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value
ASSETS
Cash and cash equivalents	[1]	75,303	73,295
Restricted cash and cash equivalents		6,261	5,280
Total		81,564	78,575
LIABILITIES
Contingent consideration related to acquisitions		0	0
Total		0	0
Significant Other Observable Inputs (Level 2) | Fair Value
ASSETS
Cash and cash equivalents	[1]	0	0
Restricted cash and cash equivalents		0	0
Total		0	0
LIABILITIES
Contingent consideration related to acquisitions		533	533
Total		533	533
Unobservable Inputs (Level 3) | Fair Value
ASSETS
Cash and cash equivalents	[1]	0	0
Restricted cash and cash equivalents		0	0
Total		0	0
LIABILITIES
Contingent consideration related to acquisitions		0	0
Total		$ 0	$ 0

[1] Cash equivalents consist primarily of money market funds.