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Note 11 - Treasury Stock (Details Textual) $ in Millions | Oct. 04, 2021 USD ($)
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Stock Repurchase Program, Authorized Amount | $ 3

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