Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 407	$ 416
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	124,694,737	124,197,974
Common stock, shares outstanding (in shares)	74,084,245	73,751,615
Treasury stock, shares (in shares)	50,610,492	50,446,359