Net income per share - Reconciliation of Numerator and Denominator in Basic and Diluted Net Income (Loss) Per Common Share Computations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income	$ 52,977	$ 14,469
Denominator:
Weighted average common shares outstanding - basic (in shares)	53,938,136	51,707,160
Dilutive common equivalent shares from equity awards (in shares)	3,237,734	2,127,572
Weighted average common shares outstanding - diluted (in shares)	57,175,870	53,834,732
Net income per share:
Basic (in USD per share)	$ 0.98	$ 0.28
Diluted (in USD per share)	$ 0.93	$ 0.27
Anti-dilutive securities excluded from diluted EPS:
Weighted average anti-dilutive shares from outstanding equity awards excluded from diluted earnings per share (in shares)	141,407	741,016