SUPPLEMENTAL CONDENSED CONSOLIDATED FINANCIAL STATEMENT INFORMATION - CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Condensed Financial Information Disclosure [Abstract]
Cash Paid for Interest	$ 5,302	$ 4,673
Cash payments of income taxes, net	9,557	(1,513)
Operating cash flows from operating leases	6,277	6,841
Liabilities for contingent consideration in business combinations, including measurement period adjustments	0	5,200
Finance leases of property and equipment	760	0
Accrued but unpaid purchases of property and equipment	3,295	3,301
Inventory Transfer to Property and Equipment	$ 153	$ 73