Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Class A Common Stock.	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Total
Beginning Balance at Dec. 31, 2020	$ 1	$ 123,872	$ (118,903)	$ (1,099)	$ 3,871
Beginning Balance, Shares at Dec. 31, 2020	1,484,362
Issuance of common stock in February 2021 offering	$ 1	8,398			8,399
Issuance of common stock in February 2021 offering (in shares)	744,936
Issuance of warrants in February 2021 offering		2,638			2,638
Share issuance costs		(1,361)			(1,361)
Exercise of warrants		1,318			1,318
Exercise of warrants (in shares)	81,895
Exercise of stock options		2			2
Exercise of stock options (in shares)	214
Settlement of restricted stock units, Shares	1,028
Stock-based compensation		3,156			3,156
Stock-based compensation (in shares)	5,337
Other comprehensive income				(313)	(313)
Net loss			(9,343)		(9,343)
Ending Balance at Jun. 30, 2021	$ 2	138,023	(128,246)	(1,412)	8,367
Ending Balance, Shares at Jun. 30, 2021	2,317,772
Beginning Balance at Mar. 31, 2021	$ 2	135,388	(122,265)	(1,227)	11,898
Beginning Balance, Shares at Mar. 31, 2021	2,311,868
Exercise of warrants		4			4
Exercise of warrants (in shares)	262
Exercise of stock options		2			2
Exercise of stock options (in shares)	214
Settlement of restricted stock units, Shares	91
Stock-based compensation		2,629			2,629
Stock-based compensation (in shares)	5,337
Other comprehensive income				(185)	(185)
Net loss			(5,981)		(5,981)
Ending Balance at Jun. 30, 2021	$ 2	138,023	(128,246)	(1,412)	8,367
Ending Balance, Shares at Jun. 30, 2021	2,317,772
Beginning Balance at Dec. 31, 2021	$ 4	149,412	(137,035)	(1,125)	11,256
Beginning Balance, Shares at Dec. 31, 2021	3,780,674
Common stock issued under equity line of credit		638			638
Common stock issued under equity line of credit (in shares)	391,363
Settlement of restricted stock units, Shares	6,274
Common stock issued for services		34			$ 34
Common stock issued for services (in shares)	8,791				8,791
Stock-based compensation		581			$ 581
Stock-based compensation (in shares)	8,011
Other comprehensive income				149	149
Net loss			(8,156)		(8,156)
Ending Balance at Jun. 30, 2022	$ 4	150,665	(145,191)	(976)	4,502
Ending Balance, Shares at Jun. 30, 2022	4,195,113
Beginning Balance at Mar. 31, 2022	$ 4	149,834	(141,381)	(1,327)	7,130
Beginning Balance, Shares at Mar. 31, 2022	3,794,797
Common stock issued under equity line of credit		638			638
Common stock issued under equity line of credit (in shares)	391,363
Settlement of restricted stock units, Shares	4,690
Common stock issued for services		14			$ 14
Common stock issued for services (in shares)	4,263				4,263
Stock-based compensation		179			$ 179
Other comprehensive income				351	351
Net loss			(3,810)		(3,810)
Ending Balance at Jun. 30, 2022	$ 4	$ 150,665	$ (145,191)	$ (976)	$ 4,502
Ending Balance, Shares at Jun. 30, 2022	4,195,113