Restatement of Previously Issued Financial Statements, Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Condensed Consolidated Balance Sheet [Abstract]
Receivable research incentives	$ 183		$ 4,774
Prepaid expenses and other current assets	4,545		1,116
Trade accounts receivable	419		421
Total current assets	21,444		19,158
Total assets	33,654		32,610
Trade accounts payable	2,487		2,109
Deferred revenue, current	1,668		2,665
Total current liabilities	13,586		10,295
Loans payable, noncurrent	12,626		12,233
Total liabilities	37,921		29,590
Additional paid-in capital	370,155		148,850
Accumulated deficit	(364,008)		(325,268)
Total stockholders' (deficit) equity	(4,267)	$ (20,732)	3,020	$ 13,097	$ 17,053	$ 30,237
Total liabilities and stockholders' equity	33,654		32,610
As Previously Reported [Member]
Condensed Consolidated Balance Sheet [Abstract]
Receivable research incentives	1,052
Prepaid expenses and other current assets	8,190
Trade accounts receivable	740
Total current assets	26,279
Total assets	38,489
Trade accounts payable	3,158
Deferred revenue, current	1,989
Total current liabilities	14,578
Loans payable, noncurrent	12,912
Total liabilities	39,199
Additional paid-in capital	372,840
Accumulated deficit	(363,136)
Total stockholders' (deficit) equity	(710)	(20,093)	$ 3,020		$ 19,639	$ 32,729
Total liabilities and stockholders' equity	38,489
Adjustment [Member]
Condensed Consolidated Balance Sheet [Abstract]
Receivable research incentives	(869)
Prepaid expenses and other current assets	(3,645)
Trade accounts receivable	(321)
Total current assets	(4,835)
Total assets	(4,835)
Trade accounts payable	(671)
Deferred revenue, current	(321)
Total current liabilities	(992)
Loans payable, noncurrent	(286)
Total liabilities	(1,278)
Additional paid-in capital	(2,685)
Accumulated deficit	(872)
Total stockholders' (deficit) equity	(3,557)	$ (639)
Total liabilities and stockholders' equity	$ (4,835)