Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2020	$ 0	$ 249,663	$ (7)	$ (233,338)	$ 16,318
Balance (in shares) at Dec. 31, 2020	27,360
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(19,554)	(19,554)
Unrealized foreign currency translation adjustment	0	0	(4)	0	(4)
Unrealized gain (loss) on marketable securities	0	0	(24)	0	(24)
Stock-based compensation, net	$ 0	1,314	0	0	1,314
Stock-based compensation, net (in shares)	0
Issuance of common stock, net	$ 0	27,896	0	0	27,896
Issuance of common stock, net (in shares)	78,014
Exercise of warrants	$ 0	1	0	0	1
Exercise of warrants (in shares)	2
Balance at Dec. 31, 2021	$ 0	278,874	(35)	(252,892)	25,947
Balance (in shares) at Dec. 31, 2021	105,376
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0	0	0	(14,525)	(14,525)
Unrealized foreign currency translation adjustment	0	0	(7)	0	(7)
Unrealized gain (loss) on marketable securities	0	0	80	0	80
Stock-based compensation, net	$ 0	862	0	0	862
Stock-based compensation, net (in shares)	0
Issuance of common stock, net	$ 0	0	0	0	0
Issuance of common stock, net (in shares)	209,940
Conversion of preferred stock into common stock	$ 0	0	0	0	0
Conversion of preferred stock into common stock (in shares)	221,078
Balance at Dec. 31, 2022	$ 0	$ 279,736	$ 38	$ (267,417)	$ 12,357
Balance (in shares) at Dec. 31, 2022	536,394