Acquisitions of and Investments in Businesses and Technologies - Contingent Consideration (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Acquisition-related contingent consideration [Roll Forward]
Beginning balance	$ 4,172	$ 3,046
Fair value of contingent consideration acquired	310	1,742
Change in fair value of the liability	412	708
Contingent consideration earn-out paid	(1,960)	(1,324)
Ending balance	2,934	4,172
Balance Sheet Classification [Abstract]
Fair value of contingent consideration liability, current			$ 763	$ 1,796
Fair value of contingent consideration liability, noncurrent			2,171	2,376
Ending balance	$ 2,934	$ 3,046	2,934	$ 4,172
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	$ 1,333
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 | SBG Innovatiie
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	$ 2,237
Aerostar | ATS
Balance Sheet Classification [Abstract]
Duration for payments of contingent consideration	7 years
Loss Contingency Accrual			$ 0