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Condensed Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Condensed Balance Sheets    
Allowance for credit losses $ 266 $ 287
Deferred tax asset valuation allowance $ 936 $ 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 50,000,000 50,000,000
Common stock, shares issued (in shares) 7,334,600 7,099,441
Common stock, shares outstanding (in shares) 7,120,178 6,885,019
Treasury stock shares (in shares) 214,422 214,422