Acquisitions and Divestitures of and Investments in Businesses and Technologies Acquisition-related Contingent Consideration (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Acquisition-related contingent consideration [Roll Forward]
Acquisition-related contingent consideration, Beginning Balance	$ 2,000	$ 2,934
Change in fair value of acquisition-related contingent consideration	0	(55)
Contingent consideration earn-out paid	0	(101)
Acquisition-related contingent consideration, Ending Balance	2,000	2,778
Acquisition-related contingent consideration liability, current			$ 2,000	$ 580
Acquisition-related contingent consideration liability, Noncurrent			0	2,198
Business Combination, Contingent Consideration, Liability	$ 2,000	$ 2,778	2,000	$ 2,778
Applied Technology [Member] | AgSync [Member]
Business Combination, Contingent Consideration Arrangements [Abstract]
Contingent Consideration Term in Years	3 years
Contingent consideration, potential cash payment			$ 3,500
Business acquisition contingent consideration cumulative paid	$ 0