CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 60,148	$ 49,544
Cost of revenues	56,139	70,570
GROSS PROFIT (LOSS) (Note 2)	4,009	(21,026)
Selling, general and administrative expenses	10,344	9,588
Impairment loss		2,072
LOSS FROM OPERATIONS	(6,335)	(32,686)
Other income, net	1,088	2,252
LOSS BEFORE INCOME TAXES	(5,247)	(30,434)
Income tax benefit (Note 10)	4,454	521
NET LOSS	(793)	(29,913)
Net loss attributable to non-controlling interests	(30)	(113)
NET LOSS ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	(763)	(29,800)
Foreign currency translation adjustments	(246)	(1,054)
COMPREHENSIVE LOSS ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	$ (1,009)	$ (30,854)
NET LOSS PER SHARE ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC. (Note 11)
Basic (in Dollars per share)	$ (0.05)	$ (1.91)
Diluted (in Dollars per share)	$ (0.05)	$ (1.91)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic (in shares)	15,643	15,583
Diluted (in shares)	15,643	15,583
CASH DIVIDENDS PER SHARE (Note 12)	$ 0.25	$ 0.25