Stockholders Equity (Details) - 2017 Plan [Member] - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2022	Apr. 30, 2021
Total restricted stock and stock option programs	$ 407	$ 336
Total income tax benefit recognized for stock-based compensation arrangements	$ 85	$ 71

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration