CONDENSED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Accounts receivable, allowance	$ 30	$ 56
Notes receivable, allowance	12	4
Notes and other receivables, long-term, allowance	$ 25	$ 9
Temporary equity, par value per share	$ 0.01	$ 0.01
Temporary equity, shares authorized	20,000	0
Temporary equity, shares issued	20,000	0
Temporary equity, shares outstanding	20,000	0
Temporary equity, aggregate liquidation preference	$ 20,000	$ 0
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	9,980,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	11,199,000	11,093,000
Common stock, shares outstanding	11,199,000	11,093,000