Consolidated statements of shareholders' equity - USD ($) $ in Thousands	Common Stock	Common Stock Subscribed	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated other comprehensive loss	Total
Balance ( in shares) at Dec. 31, 2020	642,036,228
Balance, amount at Dec. 31, 2020	$ 104,784	$ 460	$ 14,792	$ (68,969)		$ 51,067
Stock issuance for financing	$ 199,525					199,525
Stock issuance for financing (in shares)	105,013,158
Stock issuance costs	$ (14,281)					(14,281)
Stock-based compensation			3,065			3,065
Net loss				(8,748)		(8,748)
Stock issuance from warrant exercises	$ 44,082	$ (460)	(11,511)			32,111
Stock issuance from warrant exercises (in shares)	200,951,905
Stock issued due to exercise of stock options	$ 2,112		(744)			1,368
Stock issued due to exercise of stock options (in shares)	5,230,601
Stock redemption	$ 44,000			(32,039)		11,961
Stock redemption (in shares)	24,719,101
Balance, (in shares) at Jun. 30, 2021	977,950,993
Balance, amount at Jun. 30, 2021	$ 380,222		5,602	(109,756)		276,068
Balance ( in shares) at Mar. 31, 2021	972,092,308
Balance, amount at Mar. 31, 2021	$ 377,971		4,602	(105,045)		277,528
Stock issuance costs	0					0
Stock-based compensation			1,782			1,782
Net loss				(4,711)		(4,711)
Stock issuance from warrant exercises	$ 139		(38)			101
Stock issuance from warrant exercises (in shares)	628,084
Stock issued due to exercise of stock options	$ 2,112		(744)			1,368
Stock issued due to exercise of stock options (in shares)	5,230,601
Balance, (in shares) at Jun. 30, 2021	977,950,993
Balance, amount at Jun. 30, 2021	$ 380,222		5,602	(109,756)		276,068
Balance ( in shares) at Dec. 31, 2021	979,899,668
Balance, amount at Dec. 31, 2021	$ 380,962		9,313	(119,391)	$ 2	270,886
Stock-based compensation			4,533			4,533
Net loss				(9,210)		(9,210)
Other comprehensive income					11	11
Balance, (in shares) at Jun. 30, 2022	979,899,668
Balance, amount at Jun. 30, 2022	$ 380,962		13,846	(128,601)	13	266,220
Balance ( in shares) at Mar. 31, 2022	979,899,668
Balance, amount at Mar. 31, 2022	$ 380,962		11,354	(123,328)	53	269,041
Stock-based compensation			2,492			2,492
Net loss				(5,273)		(5,273)
Other comprehensive income					(40)	(40)
Balance, (in shares) at Jun. 30, 2022	979,899,668
Balance, amount at Jun. 30, 2022	$ 380,962		$ 13,846	$ (128,601)	$ 13	$ 266,220