Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Allowance for doubtful accounts	$ 23	$ 23
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	10,000,000	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	490,000,000	30,000,000
Common stock, shares issued	28,012,017	3,599,232
Common stock, shares outstanding	28,012,017	3,599,232
Convertible Series A Preferred Stock [Member]
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	0	9,600,000
Preferred stock, shares issued	0	9,342,092
Preferred stock, shares outstanding	0	9,342,092
Preferred stock, liquidation preference, value	$ 0	$ 41,586