CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 573,333	$ 455,040	$ 509,370
Cost of revenues	492,499	368,679	409,638
GROSS PROFIT	80,834	86,361	99,732
Selling, general and administrative expenses	44,376	44,692	47,321
Impairment loss			7,901
INCOME FROM OPERATIONS	36,458	41,669	44,510
Other income, net	12,475	4,331	2,552
INCOME BEFORE INCOME TAXES	48,933	46,000	47,062
Income tax expense	16,575	11,296	11,356
NET INCOME	32,358	34,704	35,706
Net income (loss) attributable to non-controlling interest		1,606	(2,538)
NET INCOME ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	32,358	33,098	38,244
Foreign currency translation adjustments	(920)	(425)	(1,370)
Net unrealized gains on available-for-sale securities	199
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	$ 31,637	$ 32,673	$ 36,874
NET INCOME PER SHARE ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.
Basic (in dollars per share)	$ 2.42	$ 2.35	$ 2.43
Diluted (in dollars per share)	$ 2.39	$ 2.33	$ 2.40
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic (in shares)	13,365	14,083	15,715
Diluted (in shares)	13,548	14,176	15,913
CASH DIVIDENDS PER SHARE	$ 1.10	$ 1.00	$ 1.00