Condensed Consolidated Balance Sheets (Parentheticals) $ in Thousands	Sep. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Less: Allowance for Doubtful Accounts | $	$ 76	$ 26
Preferred stock, par value (USD per share) | $ / shares	$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	876,447	876,447
Preferred stock, outstanding (in shares)	876,447	876,447
Common stock, par value (USD per share) | $ / shares	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, issued (in shares)	4,348,690	1,406,920	[1]
Common stock, outstanding (in shares)	4,348,690	1,406,920	[1]
Series A Convertible Preferred Stock
Preferred stock, authorized (in shares)	3,300,000	3,300,000

[1] * Shares outstanding for prior periods have been restated for the 1-for-7 reverse stock split effective June 16, 2023.