Statements of Changes in Stockholders' Equity - USD ($)	Preferred Stock Series A Convertible Preferred Stock	Preferred Stock Series B Convertible Preferred Stock	Preferred Stock Series A and B Convertible Preferred Stock	Preferred Stock	Common stock Public offering	Common stock At-the-market sales	Common stock Series A Convertible Preferred Stock	Common stock Series B Convertible Preferred Stock	Common stock	Additional Paid in Capital. Public offering	Additional Paid in Capital. At-the-market sales	Additional Paid in Capital.	Accumulated Other Comprehensive Income	Accumulated Deficit	Public offering	At-the-market sales	Total
Balance at Dec. 31, 2019												$ 306,115,000		$ (260,370,000)			$ 45,745,000
Balance (in shares) at Dec. 31, 2019									1,745,264
Increase (decrease) in stockholders' equity
Share-based compensation - stock options and RSUs												2,818,000					2,818,000
Issuance of common stock										$ 48,435,000					$ 48,435,000
Issuance of common stock (in shares)					431,250
Issuance of common stock upon exercise of options												610,000					610,000
Issuance of common stock upon exercise of options (in shares)									12,586
Warrants issued in connection with long-term debt												3,570,000					3,570,000
Unrealized net gain on marketable securities													$ 3,000				3,000
Net loss														(51,853,000)			(51,853,000)
Balance at Dec. 31, 2020												361,548,000	3,000	(312,223,000)			49,328,000
Balance (in shares) at Dec. 31, 2020									2,189,100
Increase (decrease) in stockholders' equity
Share-based compensation - stock options and RSUs												3,338,000					3,338,000
Issuance of common stock										$ 11,898,000	$ 9,266,000				11,898,000	$ 9,266,000
Issuance of common stock (in shares)					666,666	172,879
Issuance of common stock upon exercise of options												75,000					75,000
Issuance of common stock upon exercise of options (in shares)									3,160
Vesting of RSUs (in shares)									3,096
Warrants issued in connection with long-term debt												1,080,000					1,080,000
Unrealized net gain on marketable securities													$ (3,000)				(3,000)
Net loss														(71,067,000)			(71,067,000)
Balance at Dec. 31, 2021												387,205,000		(383,290,000)			3,915,000
Balance (in shares) at Dec. 31, 2021									3,034,901
Increase (decrease) in stockholders' equity
Share-based compensation - stock options and RSUs												764,000					764,000
Issuance of common stock											348,000					348,000
Issuance of common stock (in shares)						25,623
Conversion of convertible preferred stock (in shares)	(2,425)		4,850				303,125
Vesting of RSUs (in shares)									1,773
Net loss														(10,385,000)			(10,385,000)
Balance at Mar. 31, 2022												388,317,000		(393,675,000)			(5,358,000)
Balance (in shares) at Mar. 31, 2022				2,425					3,365,422
Balance at Dec. 31, 2021												387,205,000		(383,290,000)			3,915,000
Balance (in shares) at Dec. 31, 2021									3,034,901
Increase (decrease) in stockholders' equity
Net loss																	(15,553,000)
Balance at Jun. 30, 2022									$ 1,000			401,211,000		(398,843,000)			2,369,000
Balance (in shares) at Jun. 30, 2022									12,360,157
Balance at Dec. 31, 2021												387,205,000		(383,290,000)			3,915,000
Balance (in shares) at Dec. 31, 2021									3,034,901
Increase (decrease) in stockholders' equity
Net loss																	(21,481,000)
Balance at Sep. 30, 2022									$ 4,000			401,744,000					(3,025,000)
Balance (in shares) at Sep. 30, 2022									39,026,823
Balance at Dec. 31, 2021												387,205,000		(383,290,000)			3,915,000
Balance (in shares) at Dec. 31, 2021									3,034,901
Increase (decrease) in stockholders' equity
Share-based compensation - stock options and RSUs												2,492,000					2,492,000
Fractional shares retired as a result of reverse split									(11)
Issuance of common stock					$ 3,000	$ 1,000					13,456,000				$ 3,000	13,457,000
Issuance of common stock (in shares)					26,666,666	12,655,773
Conversion of convertible preferred stock (in shares)	(2,425)	(2,425)	4,850				303,125	303,125
Vesting of RSUs (in shares)									6,555
Net loss														(25,412,000)			(25,412,000)
Balance at Dec. 31, 2022									$ 4,000			403,153,000		(408,702,000)			(5,545,000)
Balance (in shares) at Dec. 31, 2022									42,970,134
Balance at Mar. 31, 2022												388,317,000		(393,675,000)			(5,358,000)
Balance (in shares) at Mar. 31, 2022				2,425					3,365,422
Increase (decrease) in stockholders' equity
Share-based compensation - stock options and RSUs												669,000					669,000
Fractional shares retired as a result of reverse split									(10)
Issuance of common stock						$ 1,000					12,225,000					$ 12,226,000
Issuance of common stock (in shares)						8,687,502
Conversion of convertible preferred stock		$ (2,425)
Conversion of convertible preferred stock (in shares)								303,125
Vesting of RSUs (in shares)									4,118
Net loss														(5,168,000)			(5,168,000)
Balance at Jun. 30, 2022									$ 1,000			401,211,000		$ (398,843,000)			2,369,000
Balance (in shares) at Jun. 30, 2022									12,360,157
Increase (decrease) in stockholders' equity
Share-based compensation - stock options and RSUs												536,000
Issuance of common stock						$ 3,000					$ (3,000)
Issuance of common stock (in shares)						26,666,666
Net loss																	(5,930,000)
Balance at Sep. 30, 2022									$ 4,000			$ 401,744,000					$ (3,025,000)
Balance (in shares) at Sep. 30, 2022									39,026,823