CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 163,755	$ 117,875	$ 408,779	$ 336,262
Cost of revenues	144,520	95,667	351,578	269,929
GROSS PROFIT	19,235	22,208	57,201	66,333
Selling, general and administrative expenses	11,375	12,667	32,467	34,226
INCOME FROM OPERATIONS	7,860	9,541	24,734	32,107
Other income, net	3,733	768	7,222	1,868
INCOME BEFORE INCOME TAXES	11,593	10,309	31,956	33,975
Income tax expense	6,129	2,551	11,616	14,510
NET INCOME	5,464	7,758	20,340	19,465
Foreign currency translation adjustments	(882)	(650)	(627)	(2,601)
Net unrealized losses on available-for-sale securities	(427)		(1,147)
COMPREHENSIVE INCOME	$ 4,155	$ 7,108	$ 18,566	$ 16,864
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.41	$ 0.56	$ 1.52	$ 1.36
Diluted (in dollars per share)	$ 0.40	$ 0.56	$ 1.50	$ 1.36
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic (in shares)	13,328	13,781	13,381	14,268
Diluted (in shares)	13,559	13,812	13,549	14,350
CASH DIVIDENDS PER SHARE	$ 0.30	$ 0.25	$ 0.80	$ 0.75