CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 141,349	$ 118,110	$ 245,024	$ 218,387
Cost of revenues	117,607	93,723	207,058	174,262
GROSS PROFIT	23,742	24,387	37,966	44,125
Selling, general and administrative expenses	10,501	10,984	21,092	21,559
INCOME FROM OPERATIONS	13,241	13,403	16,874	22,566
Other income, net	4,118	505	3,489	1,100
INCOME BEFORE INCOME TAXES	17,359	13,908	20,363	23,666
Income tax expense	4,592	9,686	5,487	11,959
NET INCOME	12,767	4,222	14,876	11,707
Foreign currency translation adjustments	(185)	(687)	255	(1,951)
Net unrealized losses on available-for-sale securities	(683)		(720)
COMPREHENSIVE INCOME	$ 11,899	$ 3,535	$ 14,411	$ 9,756
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.95	$ 0.30	$ 1.11	$ 0.81
Diluted (in dollars per share)	$ 0.94	$ 0.30	$ 1.10	$ 0.80
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic	13,403	14,134	13,408	14,516
Diluted	13,542	14,247	13,544	14,616
CASH DIVIDENDS PER SHARE	$ 0.25	$ 0.25	$ 0.50	$ 0.50