XML 15 R3.htm IDEA: XBRL DOCUMENT v3.21.2
Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Accounts receivable, allowance for doubtful accounts $ 342 $ 368
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) 83,018,418 80,295,141
Common stock, shares outstanding (in shares) 78,928,638 76,349,274
Treasury stock, shares (in shares) 4,089,780 3,945,867