Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Income Statement [Abstract]
Net sales	$ 98,178	$ 111,129
Cost of sales	63,112	71,131
Gross profit	35,066	39,998
Research and development expenses	7,271	5,285
Selling, general, and administrative expenses	12,674	13,182
Operating income	15,121	21,531
Other income (expense), net	(69)	5,679
Income before income taxes	15,052	27,210
Income tax expense	1,842	5,063
Net income	13,210	22,147
Net income (loss) attributable to the noncontrolling interest	0	12
Net income attributable to Raven Industries, Inc.	$ 13,210	$ 22,135
Net income per common share:
Basic (in dollars per share)	$ 0.37	$ 0.62
Diluted (in dollars per share)	$ 0.36	$ 0.61
Comprehensive income (loss):
Net income	$ 13,210	$ 22,147
Other comprehensive income (loss):
Foreign currency translation	(304)	(480)
Postretirement benefits, net of income tax benefit of $4 and $2 respectively	(12)	(6)
Other comprehensive income (loss), net of tax	(316)	(486)
Comprehensive income (loss)	12,894	21,661
Comprehensive income (loss) attributable to noncontrolling interest	0	12
Comprehensive income (loss) attributable to Raven Industries, Inc.	$ 12,894	$ 21,649