CONSOLIDATED BALANCE SHEETS (parenthetical) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
CONSOLIDATED BALANCE SHEETS
Allowance for accounts receivable	$ 103	$ 110
Long-term debt, discount	3,646	5,701
Long-term debt - related party, discount	$ 1,391	$ 0
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	26,799,516	26,036,236
Common stock, shares outstanding	26,260,181	25,666,434
Treasury stock (in shares)	539,335	369,802