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Interim Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Allowance for doubtful accounts $ 288 $ 288
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 45,000,000 45,000,000
Common stock, shares issued (in shares) 23,595,160 23,595,160
Common stock, shares outstanding (in shares) 23,204,274 22,984,552
Treasury stock, shares (in shares) 390,886 610,608