Earnings Per Share and Stock Plans (Schedule of Earnings Per Share) (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Numerator for basic and diluted earnings per share:
Net income	$ 48,429	$ 29,660	$ 9,106
Denominators:
Average basic shares outstanding	28,600	28,040	23,897
Effect of dilutive employee stock options, RSU's and performance shares	218	361	276
Average diluted shares outstanding	28,818	28,401	24,173