Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member] Series B Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2019		$ 10	$ 340,228		$ (327,574)	$ 13,442
Beginning balance, shares at Dec. 31, 2019	778	10,386,754
Shares issued for: Common stock issuance, net of costs		$ 32	61,216			61,248
Beginning balance, shares		31,761,210
Warrant modification			46			46
Equity-based compensation			1,036			1,036
Shares issued to pay accounts payable			15			15
Beginning balance, shares		6,407
Series B preferred shares converted to Common shares						(46)
Beginning balance, shares	(46)
Net comprehensive loss				(47)	(14,400)	(14,447)
Ending balance, value at Dec. 31, 2020		$ 42	402,541	(47)	(341,974)	61,294
Beginning balance, shares at Dec. 31, 2020	732	42,154,371
Shares issued for: Common stock issuance, net of costs		$ 6	13,036			13,042
Beginning balance, shares		5,790,301
Equity-based compensation			1,568			1,568
Shares issued to pay accounts payable			55			55
Beginning balance, shares		50,000
Series B preferred shares converted to Common shares			17
Beginning balance, shares	(17)
Net comprehensive loss				47	(19,127)	(19,080)
Ending balance, value at Dec. 31, 2021		$ 48	$ 417,217		$ (361,101)	$ 56,879
Beginning balance, shares at Dec. 31, 2021	715	47,994,672