Acquisitions and Divestitures of and Investments in Businesses and Technologies Acquisition-related Contingent Consideration (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Acquisition-related contingent consideration [Roll Forward]
Acquisition-related contingent consideration, Beginning Balance	$ 2,000	$ 2,778	$ 2,000	$ 2,934
Change in fair value of acquisition-related contingent consideration	0	(157)	0	(212)
Contingent consideration earn-out paid	0	(162)	0	(263)
Acquisition-related contingent consideration, Ending Balance	2,000	2,459	2,000	2,459
Acquisition-related contingent consideration liability, current	2,000	233	2,000	233
Acquisition-related contingent consideration liability, Noncurrent	0	2,226	0	2,226
Business Combination, Contingent Consideration, Liability	2,000	$ 2,459	$ 2,000	$ 2,459
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		$ 3,500
Business acquisition contingent consideration cumulative paid			$ 0