Fair Value Measurements - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands		Mar. 31, 2020	Mar. 31, 2019
Carrying Value
ASSETS
Cash and cash equivalents	[1]	$ 138,012	$ 33,079
Restricted cash and cash equivalents		2,307	1,443
Total		140,319	34,522
LIABILITIES
Contingent consideration related to acquisitions		1,900	1,000
Total		1,900	1,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value
ASSETS
Cash and cash equivalents	[1]	138,012	33,079
Restricted cash and cash equivalents		2,307	1,443
Total		140,319	34,522
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		0	0
Total		0	0
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		1,900	1,000
Total		$ 1,900	$ 1,000

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