Acquisitions of and Investments in Businesses and Technologies - Contingent Consideration (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Acquisition-related contingent consideration [Roll Forward]
Beginning balance	$ 2,934	$ 4,172
Fair value of contingent consideration acquired	0	310
Change in fair value of the liability	(437)	412
Contingent consideration earn-out paid	(497)	(1,960)
Ending balance	2,000	2,934
Balance Sheet Classification [Abstract]
Fair value of contingent consideration liability, current			$ 2,000	$ 763
Fair value of contingent consideration liability, noncurrent			0	2,171
Ending balance	$ 2,000	$ 4,172	2,000	2,934
Engineered Films | CLI
Balance Sheet Classification [Abstract]
Maximum amount of contingent consideration to be paid				2,000
Duration for payments of contingent consideration	3 years
Business acquisition contingent consideration cumulative paid	$ 1,567
Remaining contingent obligation			0
Applied Technology | AgSync
Balance Sheet Classification [Abstract]
Maximum amount of contingent consideration to be paid			3,500
Duration for payments of contingent consideration	3 years
Business acquisition contingent consideration cumulative paid	$ 0
Applied Technology | Raven Europe
Balance Sheet Classification [Abstract]
Maximum amount of contingent consideration to be paid				$ 2,500
Duration for payments of contingent consideration	10 years
Business acquisition contingent consideration cumulative paid	$ 2,500
Remaining contingent obligation			$ 0