Summary of Significant Accounting Policies - Weighted Average Shares Outstanding for Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Earnings per share — Basic:
Net income	$ 1,618	$ 9,515	$ 7,498
Weighted-average shares outstanding — Basic	67,370	66,739	65,474
Net income per common share — Basic	$ 0.02	$ 0.14	$ 0.11
Earnings per share — Diluted:
Net income	$ 1,618	$ 9,515	$ 7,498
Weighted-average shares outstanding — Basic	67,370	66,739	65,474
Effect of potentially dilutive securities	418	146	138
Weighted-average shares outstanding — Diluted	67,788	66,885	65,612
Net income per common share — Diluted	$ 0.02	$ 0.14	$ 0.11