Consolidated Statements of Shareholders' Equity or Deficit (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2020	$ (14,100)	$ 286	$ 219,998	$ (234,384)
Balance, Shares at Dec. 31, 2020		28,601,358
Issuance of common stock, net of costs	9,340	$ 22	9,318
Issuance of common stock , net of costs , shares		2,202,420
Stock-based compensation expense	3,133		3,133
Vesting of restricted stock units, net	(336)	$ 2	(338)
Vesting of restricted stock units, net , Shares		209,541
Net income (loss)	(6,761)			(6,761)
Balance at Mar. 31, 2021	(8,724)	$ 310	232,111	(241,145)
Balance, Shares at Mar. 31, 2021		31,013,319
Balance at Dec. 31, 2020	(14,100)	$ 286	219,998	(234,384)
Balance, Shares at Dec. 31, 2020		28,601,358
Net income (loss)	(5,527)
Balance at Jun. 30, 2021	26,416	$ 465	265,862	(239,911)
Balance, Shares at Jun. 30, 2021		46,501,849
Balance at Mar. 31, 2021	(8,724)	$ 310	232,111	(241,145)
Balance, Shares at Mar. 31, 2021		31,013,319
Issuance of common stock, net of costs	32,103	$ 153	31,950
Issuance of common stock , net of costs , shares		15,333,332
Stock-based compensation expense	1,929		1,929
Vesting of restricted stock units, net	(126)	$ 2	(128)
Vesting of restricted stock units, net , Shares		155,198
Net income (loss)	1,234			1,234
Balance at Jun. 30, 2021	26,416	$ 465	265,862	(239,911)
Balance, Shares at Jun. 30, 2021		46,501,849
Balance at Dec. 31, 2021	42,064	$ 467	287,351	(245,754)
Balance, Shares at Dec. 31, 2021		46,681,453
Issuance of common stock, net of costs	(16)	$ 93	(109)
Issuance of common stock , net of costs , shares		9,302,718
Stock-based compensation expense	1,479		1,479
Vesting of restricted stock units, net	(101)	$ 5	(106)
Vesting of restricted stock units, net , Shares		487,695
Exercise of stock options, net, Shares		220
Net income (loss)	(4,264)			(4,264)
Balance at Mar. 31, 2022	39,162	$ 565	288,615	(250,018)
Balance, Shares at Mar. 31, 2022		56,472,086
Balance at Dec. 31, 2021	$ 42,064	$ 467	287,351	(245,754)
Balance, Shares at Dec. 31, 2021		46,681,453
Exercise of stock options, net, Shares	220
Net income (loss)	$ (7,383)
Balance at Jun. 30, 2022	37,329	$ 566	289,900	(253,137)
Balance, Shares at Jun. 30, 2022		56,644,563
Balance at Mar. 31, 2022	39,162	$ 565	288,615	(250,018)
Balance, Shares at Mar. 31, 2022		56,472,086
Issuance of common stock, net of costs	(113)		(113)
Stock-based compensation expense	1,408		1,408
Vesting of restricted stock units, net	(9)	$ 1	(10)
Vesting of restricted stock units, net , Shares		172,477
Net income (loss)	(3,119)			(3,119)
Balance at Jun. 30, 2022	$ 37,329	$ 566	$ 289,900	$ (253,137)
Balance, Shares at Jun. 30, 2022		56,644,563