Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Allowance for credit losses	$ 31	$ 31
STOCKHOLDERS' EQUITY:
Common stock, par value (in dollars per share)	$ 0.0024	$ 0.0024
Common stock, shares authorized (in shares)	25,000,000	25,000,000
Common stock, shares issued (in shares)	9,846,670	9,823,621
Common stock, shares outstanding (in shares)	8,422,514	8,399,245
Treasury stock, shares (in shares)	1,424,156	1,424,156