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Note 11 - Shareholders' Equity - Authorized Share Repurchase Plan (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Maximum authorized share repurchase amount (1) [1] $ 7,500 $ 7,500
Number of shares repurchased under the plan (shares) (in shares) 129,095 54,249
Amount paid for shares repurchased $ 2,938 $ 1,500
Weighted average price paid per share (in dollars per share) $ 22.76 $ 27.65
Remaining amount of shares authorized to be purchased under the plan (in dollars) $ 4,562 $ 6,000
[1] Common shares can be purchased in the open market or privately negotiated transactions over the next twelve months from the date of plan authorization.