Net Income per Share - Schedule of calculation of numerator and denominator in earnings per share - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Numerator:
Net income attributable to Raven Industries, Inc.	$ 18,876	$ 35,196	$ 51,794
Denominator:
Weighted average common shares outstanding (in shares)	35,837,750	35,861,255	35,907,041
Weighted average stock units outstanding (in shares)	147,776	122,792	99,922
Denominator for basic calculation (in shares)	35,985,526	35,984,047	36,006,963
Weighted average common shares outstanding (in shares)	35,837,750	35,861,255	35,907,041
Weighted average stock units outstanding (in shares)	147,776	122,792	99,922
Dilutive impact of stock options and RSUs (in shares)	164,695	231,708	431,595
Denominator for diluted calculation (in shares)	36,150,221	36,215,755	36,438,558
Net income per share - basic (in usd per share)	$ 0.52	$ 0.98	$ 1.44
Net income per share - diluted (in usd per share)	$ 0.52	$ 0.97	$ 1.42