CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Series 1, Series 2 and Bridge warrant Common Stock Common stock - voting	Series 1, Series 2 and Bridge warrant Additional paid-in capital	Series 1, Series 2 and Bridge warrant	Series 3 warrants Common Stock Common stock - voting	Series 3 warrants Additional paid-in capital	Series 3 warrants	Series 1, Series 2, and 2019 Bridge Note warrants June 2020 Common Stock Common stock - voting	Series 1, Series 2, and 2019 Bridge Note warrants June 2020 Additional paid-in capital	Series 1, Series 2, and 2019 Bridge Note warrants June 2020	ELOC Additional paid-in capital	ELOC	Private Investment in Public Entities Common Stock Common stock - voting	Private Investment in Public Entities Additional paid-in capital	Private Investment in Public Entities	At The Market Offering Common Stock Common stock - voting	At The Market Offering Additional paid-in capital	At The Market Offering	Common Stock Common stock - voting	Common Stock Common stock - non-voting	Additional paid-in capital	Noncontrolling Interest	Accumulated deficit	Series D perpetual preferred stock	Total
Beginning Balance at Dec. 31, 2020																		$ 4		$ 184,097		$ (166,899)		$ 17,202
Beginning Balance (in shares) at Dec. 31, 2020																		38,007,420	2,120,786
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of common stock							$ 1	$ 23,233	$ 23,234				$ 975	$ 975		$ 5,365	$ 5,365
Issuance of common stock (In shares)							4,028,290					416,664			669,850
Shares issued on conversion of Napo merger common shares (in shares)				602
Shares issued to Iliad in exchange of notes payable and accrued interest																				2,982				2,982
Shares issued to Iliad in exchange of notes payable and accrued interest (in shares)																		588,235
Issuance of warrants										$ 124	$ 124
Shares issued in extinguishment of Exchange Note 2																				2,516				2,516
Shares issued in extinguishment of Exchange Note 2 (in shares)																		471,202
Value of shares issued on exercise of warrants		$ 2,034	$ 2,034		$ 1,776	$ 1,776
Shares issued on exercise of warrants	1,383,524			206,915
Shares issued upon exercise of stock options																				2				2
Shares issued upon exercise of stock options (in shares)																		1,296
Stock-based compensation																				1,665				1,665
Net loss																						(26,090)		(26,090)
Ending Balance at Jun. 30, 2021																		$ 5		224,769		(192,989)		31,785
Ending Balance (in shares) at Jun. 30, 2021																		45,773,998	2,120,786
Ending Balance (in shares) at Dec. 31, 2021																							0
Beginning Balance at Dec. 31, 2020																		$ 4		184,097		(166,899)		17,202
Beginning Balance (in shares) at Dec. 31, 2020																		38,007,420	2,120,786
Ending Balance at Dec. 31, 2021																		$ 5		231,100	$ 242	(219,494)		11,853
Ending Balance (in shares) at Dec. 31, 2021																		48,352,527	2,120,786
Beginning Balance at Mar. 31, 2021																		$ 4		210,795		(178,908)		31,891
Beginning Balance (in shares) at Mar. 31, 2021																		42,635,466	2,120,786
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of common stock							$ 1	$ 9,835	$ 9,836
Issuance of common stock (In shares)							2,549,000
Shares issued on conversion of Napo merger common shares (in shares)				1
Shares issued to Iliad in exchange of notes payable and accrued interest																				2,982				2,982
Shares issued to Iliad in exchange of notes payable and accrued interest (in shares)																		588,235
Issuance of warrants										$ 124	$ 124
Shares issued upon exercise of stock options																				2				2
Shares issued upon exercise of stock options (in shares)																		1,296
Stock-based compensation																				1,031				1,031
Net loss																						(14,081)		(14,081)
Ending Balance at Jun. 30, 2021																		$ 5		224,769		(192,989)		31,785
Ending Balance (in shares) at Jun. 30, 2021																		45,773,998	2,120,786
Ending Balance (in shares) at Jun. 30, 2022																							0
Beginning Balance at Dec. 31, 2021																		$ 5		231,100	242	(219,494)		11,853
Beginning Balance (in shares) at Dec. 31, 2021																		48,352,527	2,120,786
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of common stock															$ 3	11,561	11,564
Issuance of common stock (In shares)															26,814,743
Shares issued to Iliad in exchange of notes payable and accrued interest																		$ 1		4,699				4,700
Shares issued to Iliad in exchange of notes payable and accrued interest (in shares)																		9,793,643
Share issued upon exercise of restricted stock units																				95				95
Share issued upon exercise of restricted stock units (Shares)																		174,196
Shares issued to third party for services																				19				19
Shares issued to third party for services (in shares)																		35,000
Stock-based compensation																				2,080				2,080
Net loss																					(201)	(27,353)		(27,554)
Ending Balance at Jun. 30, 2022																		$ 9		249,554	41	(246,847)		2,757
Ending Balance (in shares) at Jun. 30, 2022																		85,170,109	2,120,786
Ending Balance (in shares) at Jun. 30, 2022																							0
Beginning Balance at Mar. 31, 2022																		$ 8		245,517	64	(237,480)		8,109
Beginning Balance (in shares) at Mar. 31, 2022																		77,073,990	2,120,786
Increase (decrease) in Stockholders' Equity (Deficit)
Issuance of common stock															$ 1	$ 2,453	$ 2,454
Issuance of common stock (In shares)															6,768,280
Shares issued to Iliad in exchange of notes payable and accrued interest																				467				467
Shares issued to Iliad in exchange of notes payable and accrued interest (in shares)																		1,143,643
Share issued upon exercise of restricted stock units																				95				95
Share issued upon exercise of restricted stock units (Shares)																		174,196
Shares issued to third party for services																				5				5
Shares issued to third party for services (in shares)																		10,000
Stock-based compensation																				1,017				1,017
Net loss																					(23)	(9,367)		(9,390)
Ending Balance at Jun. 30, 2022																		$ 9		$ 249,554	$ 41	$ (246,847)		$ 2,757
Ending Balance (in shares) at Jun. 30, 2022																		85,170,109	2,120,786