Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 318	$ 1,220
Common stock, stated value	$ 0.30	$ 0.30
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	31,606,831	31,606,831
Common stock, shares outstanding	24,728,532	24,010,727
Treasury shares	6,878,299	7,596,104