UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at Mar. 31, 2022	$ 270	$ 159,480	$ (6,734)	$ 507,846	$ (124)	$ 660,738
Balance (in shares) at Mar. 31, 2022	26,886
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock awards	$ 1	0	0	0	0	1
Issuance of restricted stock awards (in shares)	135
Share-based compensation	$ 0	1,773	0	0	0	1,773
Share-based compensation (in shares)	0
Repurchase of common stock	$ 0	0	$ (7,224)	0	0	(7,224)
Repurchase of common stock (in shares)			(128)
Net earnings	0	0	$ 0	22,339	0	22,339
Foreign currency translation adjustment	0	0	0	0	(1,339)	(1,339)
Balance at Jun. 30, 2022	$ 271	161,253	(13,958)	530,185	(1,463)	676,288
Balance (in shares) at Jun. 30, 2022	26,893
Balance at Mar. 31, 2023	$ 272	167,303	(14,080)	627,202	1,568	$ 782,265
Balance (in shares) at Mar. 31, 2023	26,905					26,905
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock awards	$ 2	(2)	0	0	0	$ 0
Issuance of restricted stock awards (in shares)	153
Issuance of common stock	$ 0	1,398	0	0	0	1,398
Issuance of common stock (in shares)	36
Share-based compensation	$ 0	2,205	0	0	0	2,205
Share-based compensation (in shares)	0
Repurchase of common stock	$ 0	0	$ (7,371)	0	0	(7,371)
Repurchase of common stock (in shares)			(147)
Net earnings	0	0	$ 0	33,847	0	33,847
Foreign currency translation adjustment	0	0	0	0	947	947
Balance at Jun. 30, 2023	$ 274	$ 170,904	$ (21,451)	$ 661,049	$ 2,515	$ 813,291
Balance (in shares) at Jun. 30, 2023	26,947					26,947