CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 193,660	$ 157,682
Cost of revenues	156,797	139,738
GROSS PROFIT	36,863	17,944
Selling, general and administrative expenses	12,521	11,425
INCOME FROM OPERATIONS	24,342	6,519
Other income, net	5,444	4,794
INCOME BEFORE INCOME TAXES	29,786	11,313
Income tax expense	7,236	3,431
NET INCOME	22,550	7,882
OTHER COMPREHENSIVE INCOME, NET OF TAXES
Foreign currency translation adjustments	3,621	(790)
Net unrealized gains (losses) on available-for-sale securities	2,680	(969)
COMPREHENSIVE INCOME	$ 28,851	$ 6,123
EARNINGS PER SHARE
Basic (in dollars per share)	$ 1.65	$ 0.59
Diluted (in dollars per share)	$ 1.6	$ 0.58
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	13,628	13,257
Diluted (in shares)	14,112	13,572
CASH DIVIDENDS PER SHARE	$ 0.375	$ 0.3