Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Mar. 31, 2022
Allowance for expected credit losses	$ 452	$ 318
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	25,058,198	24,728,532
Treasury shares	6,548,633	6,878,299