CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 227,015	$ 141,349	$ 384,697	$ 245,024
Cost of revenues	195,910	117,607	335,648	207,058
GROSS PROFIT	31,105	23,742	49,049	37,966
Selling, general and administrative expenses	12,428	10,501	23,853	21,092
INCOME FROM OPERATIONS	18,677	13,241	25,196	16,874
Other income, net	5,604	4,118	10,398	3,489
INCOME BEFORE INCOME TAXES	24,281	17,359	35,594	20,363
Income tax expense	6,083	4,592	9,514	5,487
NET INCOME	18,198	12,767	26,080	14,876
OTHER COMPREHENSIVE INCOME, NET OF TAXES
Foreign currency translation adjustments	(186)	(185)	(976)	255
Net unrealized gains (losses) on available-for-sale securities	1,459	(683)	490	(720)
COMPREHENSIVE INCOME	$ 19,471	$ 11,899	$ 25,594	$ 14,411
NET INCOME PER SHARE
Basic (in dollars per share)	$ 1.36	$ 0.95	$ 1.96	$ 1.11
Diluted (in dollars per share)	$ 1.31	$ 0.94	$ 1.90	$ 1.10
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic (in shares)	13,403	13,403	13,331	13,408
Diluted (in shares)	13,880	13,542	13,727	13,544
CASH DIVIDENDS PER SHARE	$ 0.30	$ 0.25	$ 0.60	$ 0.50