CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Common Stock Class A Common stock	Common Stock Class B Common stock	Additional Paid-in Capital Private Placement [Member]	Additional Paid-in Capital	Accumulated Deficit	Private Placement [Member]	Total
Balance at the beginning at Dec. 31, 2020	$ 7	$ 3		$ 101,080	$ (80,259)		$ 20,831
Balance at the beginning (in shares) at Dec. 31, 2020	7,091,960	3,134,162
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from stock option exercises				26			26
Proceeds from stock option exercises (in shares)	3,305
Stock-based compensation				1,562			1,562
Net loss					(7,452)		(7,452)
Balance at the ending at Jun. 30, 2021	$ 7	$ 3		102,668	(87,711)		14,967
Balance at the ending (in shares) at Jun. 30, 2021	7,095,265	3,134,162
Balance at the beginning at Mar. 31, 2021	$ 7	$ 3		101,760	(85,326)		16,444
Balance at the beginning (in shares) at Mar. 31, 2021	7,092,521	3,134,162
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from stock option exercises				23			23
Proceeds from stock option exercises (in shares)	2,744
Stock-based compensation				885			885
Net loss					(2,385)		(2,385)
Balance at the ending at Jun. 30, 2021	$ 7	$ 3		102,668	(87,711)		14,967
Balance at the ending (in shares) at Jun. 30, 2021	7,095,265	3,134,162
Balance at the beginning at Dec. 31, 2021	$ 9	$ 4		118,599	(105,091)		13,521
Balance at the beginning (in shares) at Dec. 31, 2021	9,245,146	4,313,406
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Additional issuance costs in connection with Private Placement			$ (110)			$ (110)
Proceeds from sale of common stock through Employee Stock Purchase Plan				192			192
Proceeds from sale of common stock through Employee Stock Purchase Plan (in shares)	42,345
Vesting of restricted stock units (in shares)	19,347
Stock-based compensation				2,575			2,575
Net loss					(17,547)		(17,547)
Balance at the ending at Jun. 30, 2022	$ 9	$ 4		121,256	(122,638)		(1,369)
Balance at the ending (in shares) at Jun. 30, 2022	9,306,838	4,313,406
Balance at the beginning at Mar. 31, 2022	$ 9	$ 4		119,786	(113,240)		6,559
Balance at the beginning (in shares) at Mar. 31, 2022	9,306,738	4,313,406
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted stock units (in shares)	100
Stock-based compensation				1,470			1,470
Net loss					(9,398)		(9,398)
Balance at the ending at Jun. 30, 2022	$ 9	$ 4		$ 121,256	$ (122,638)		$ (1,369)
Balance at the ending (in shares) at Jun. 30, 2022	9,306,838	4,313,406