CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS
REVENUES	$ 230,489	$ 130,348
Cost of revenues	190,393	102,046
GROSS PROFIT	40,096	28,302
Selling, general and administrative expenses	9,489	7,047
INCOME FROM OPERATIONS	30,607	21,255
Other income, net	1,218	37
INCOME BEFORE INCOME TAXES	31,825	21,292
Income tax expense	11,076	7,172
NET INCOME	20,749	14,120
Net income attributable to non-controlling interests	124	1,890
NET INCOME ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	20,625	12,230
OTHER COMPREHENSIVE INCOME
Foreign currency translation adjustments, net of tax	104	645
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.	$ 20,729	$ 12,875
EARNINGS PER SHARE ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN, INC.
Basic (in dollars per share)	$ 1.33	$ 0.82
Diluted (in dollars per share)	$ 1.31	$ 0.81
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING
Basic (in shares)	15,467	14,842
Diluted (in shares)	15,771	15,055