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Note 11 - Stock Repurchase Program (Details Textual) $ in Millions	Apr. 30, 2022 USD ($)
Stock Repurchase Program, Authorized Amount	$ 4

X

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant