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Note 14 - Subsequent Event (Details Textual) - RTC Canada [Member] - Subsequent Event [Member]
$ in Millions
May 02, 2022
USD ($)
Business Acquisition, Percentage of Voting Interests Acquired 30.00%
Business Combination, Consideration Transferred, Total $ 20
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage 80.00%