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
	Jun. 30, 2019	Jun. 30, 2018
Earnings per share — Basic:
Net income	$ 1,244	$ 2,648
Weighted-average shares outstanding — Basic	65,015	64,019
Net income per common share — Basic	$ 0.02	$ 0.04
Earnings per share — Diluted:
Net income	$ 1,244	$ 2,648
Weighted-average shares outstanding — Basic	65,015	64,019
Effect of potentially dilutive securities	338	35
Weighted-average shares outstanding — Diluted	65,353	64,054
Net income per common share — Diluted	$ 0.02	$ 0.04