Consolidated Statements of Stockholders’ Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2020	Jan. 31, 2019
Statement of Stockholders' Equity [Abstract]
Pension adjustment tax effects	$ 1,840	$ (76)

Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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