Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2021	$ 143	$ 1,565,942	$ (234)	$ (1,328,698)	$ 237,153
Balance (in shares) at Dec. 31, 2021	143,292,043
Treasury stock, balance (in shares) at Dec. 31, 2021					41,309
Issuance of common stock in connection with exercise of options		125			$ 125
Issuance of common stock in connection with exercise of options (in shares)	30,411
Issuance of restricted stock	$ 2	(2)
Issuance of restricted stock (in shares)	1,852,626
Forfeiture of restricted stock (in shares)	(591,746)
Compensation in respect of restricted stock granted to employees, directors and consultants		2,121			2,121
Net loss				(69,013)	$ (69,013)
Treasury stock, balance (in shares) at Mar. 31, 2022					41,309
Balance at Mar. 31, 2022	$ 145	1,568,186	(234)	(1,397,711)	$ 170,386
Balance (in shares) at Mar. 31, 2022	144,583,334
Balance at Dec. 31, 2021	$ 143	1,565,942	(234)	(1,328,698)	$ 237,153
Balance (in shares) at Dec. 31, 2021	143,292,043
Treasury stock, balance (in shares) at Dec. 31, 2021					41,309
Net loss					$ (109,523)
Treasury stock, balance (in shares) at Jun. 30, 2022					41,309
Balance at Jun. 30, 2022	$ 145	1,567,345	(234)	(1,438,221)	$ 129,035
Balance (in shares) at Jun. 30, 2022	145,198,058
Balance at Mar. 31, 2022	$ 145	1,568,186	(234)	(1,397,711)	$ 170,386
Balance (in shares) at Mar. 31, 2022	144,583,334
Treasury stock, balance (in shares) at Mar. 31, 2022					41,309
Issuance of common stock in connection with exercise of options		135			$ 135
Issuance of common stock in connection with exercise of options (in shares)	33,044
Issuance of restricted stock	$ 2	(2)
Issuance of restricted stock (in shares)	1,830,320
Forfeiture of restricted stock	$ (2)	1			(1)
Forfeiture of restricted stock (in shares)	(1,248,640)
Compensation in respect of restricted stock granted to employees, directors and consultants		(975)			(975)
Net loss				(40,510)	$ (40,510)
Treasury stock, balance (in shares) at Jun. 30, 2022					41,309
Balance at Jun. 30, 2022	$ 145	1,567,345	(234)	(1,438,221)	$ 129,035
Balance (in shares) at Jun. 30, 2022	145,198,058
Balance at Dec. 31, 2022	$ 146	1,585,708	(234)	(1,527,033)	$ 58,587
Balance (in shares) at Dec. 31, 2022	146,426,697
Treasury stock, balance (in shares) at Dec. 31, 2022					41,309
Issuance of common stock in connection with exercise of options		363			$ 363
Issuance of common stock in connection with exercise of options (in shares)	66,701
Issuance of restricted stock	$ 3	(3)
Issuance of restricted stock (in shares)	3,017,736
Warrants issued with debt financing		595			595
Forfeiture of restricted stock (in shares)	(73,787)
Compensation in respect of restricted stock granted to employees, directors and consultants		7,120			7,120
Net loss				(39,232)	$ (39,232)
Treasury stock, balance (in shares) at Mar. 31, 2023					41,309
Balance at Mar. 31, 2023	$ 149	1,593,783	(234)	(1,566,265)	$ 27,433
Balance (in shares) at Mar. 31, 2023	149,437,347
Balance at Dec. 31, 2022	$ 146	1,585,708	(234)	(1,527,033)	$ 58,587
Balance (in shares) at Dec. 31, 2022	146,426,697
Treasury stock, balance (in shares) at Dec. 31, 2022					41,309
Net loss					$ (86,841)
Treasury stock, balance (in shares) at Jun. 30, 2023					41,309
Balance at Jun. 30, 2023	$ 151	1,654,411	(234)	(1,613,875)	$ 40,453
Balance (in shares) at Jun. 30, 2023	150,969,323
Balance at Mar. 31, 2023	$ 149	1,593,783	(234)	(1,566,265)	$ 27,433
Balance (in shares) at Mar. 31, 2023	149,437,347
Treasury stock, balance (in shares) at Mar. 31, 2023					41,309
Issuance of common stock in connection with exercise of options		751			$ 751
Issuance of common stock in connection with exercise of options (in shares)	76,955
Issuance of restricted stock (in shares)	95,000
Forfeiture of restricted stock (in shares)	(25,679)
Issuance of common stock in public offering	$ 2	46,295			46,297
Issuance of common stock in public offering (in shares)	1,385,700
Compensation in respect of restricted stock granted to employees, directors and consultants		13,582			13,582
Net loss				(47,610)	$ (47,610)
Treasury stock, balance (in shares) at Jun. 30, 2023					41,309
Balance at Jun. 30, 2023	$ 151	$ 1,654,411	$ (234)	$ (1,613,875)	$ 40,453
Balance (in shares) at Jun. 30, 2023	150,969,323