Financing Arrangements - Debt Issuance Costs (Details) - USD ($) $ in Thousands		Jan. 31, 2019	Jan. 31, 2018
JPMorgan Chase Bank
Line of Credit Facility [Line Items]
Unamortized debt issuance costs(a)	[1]	$ 132	$ 242

[1] Unamortized debt issuance costs are amortized over the term of the Credit Agreement and are reported as "Other assets" in the Consolidated Balance Sheets