Earnings Per Share - Weighted Average Shares Outstanding for Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Earnings per share — Basic:
Net income	$ 464	$ 10,455	$ (824)	$ 4,415	$ 6,081	$ 1,244	$ 10,095	$ 11,740
Weighted-average shares outstanding — Basic	66,943			65,493			66,644	65,304
Net income per common share — Basic	$ 0.01			$ 0.07			$ 0.15	$ 0.18
Earnings per share — Diluted:
Net income	$ 464	$ 10,455	$ (824)	$ 4,415	$ 6,081	$ 1,244	$ 10,095	$ 11,740
Weighted-average shares outstanding — Basic	66,943			65,493			66,644	65,304
Effect of potentially dilutive securities	197			171			5	212
Weighted-average shares outstanding — Diluted	67,140			65,664			66,649	65,516
Net income per common share — Diluted	$ 0.01			$ 0.07			$ 0.15	$ 0.18