CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 49,544	$ 141,366
Cost of revenues	70,570	125,914
GROSS (LOSS) PROFIT (Note 2)	(21,026)	15,452
Selling, general and administrative expenses	9,588	9,637
Impairment loss (Note 5)	2,072
(LOSS) INCOME FROM OPERATIONS	(32,686)	5,815
Other income, net	2,252	764
(LOSS) INCOME BEFORE INCOME TAXES	(30,434)	6,579
Income tax benefit (expense)	521	(1,737)
NET (LOSS) INCOME	(29,913)	4,842
Net (loss) income attributable to non-controlling interests	(113)	5
NET (LOSS) INCOME ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	(29,800)	4,837
Foreign currency translation adjustments	(1,054)	(579)
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	$ (30,854)	$ 4,258
(LOSS) EARNINGS PER SHARE ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.(Note 12)
Basic (in Dollars per share)	$ (1.91)	$ 0.31
Diluted (in Dollars per share)	$ (1.91)	$ 0.31
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic (in shares)	15,583	15,568
Diluted (in shares)	15,583	15,656
CASH DIVIDENDS PER SHARE (Note 10)	$ 0.25	$ 0.25