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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Accounts receivable, allowance for doubtful accounts $ 544 $ 313
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.0005 $ 0.0005
Common stock, shares authorized (in shares) 200,000,000 200,000,000
Common stock, shares issued (in shares) 84,385,458 83,057,083
Common stock, shares outstanding (in shares) 80,085,306 78,965,260
Treasury stock, shares (in shares) 4,300,152 4,091,823