CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning balance, value at Dec. 31, 2020	$ (124,001)	$ 6	$ 754,938	$ (878,945)
Beginning balance, shares at Dec. 31, 2020		5,996,000
Sale of common stock, net of costs	150,899	$ 2	150,897
Shares issued for sale of common stock, net of cost, shares		1,857,000
Exercise of warrants, net of cashless exercises	50		50
Shares issued for exercise of warrants and options, net of cashless exercises (in shares)		10,000
Vested restricted stock units		1,000
Share-based compensation	2,957		2,957
Net income (loss)	(39,383)			(39,383)
Ending balance, value at Mar. 31, 2021	(9,478)	$ 8	908,842	(918,328)
Ending balance, shares at Mar. 31, 2021		7,864,000
Beginning balance, value at Dec. 31, 2020	(124,001)	$ 6	754,938	(878,945)
Beginning balance, shares at Dec. 31, 2020		5,996,000
Net income (loss)	(129,455)
Ending balance, value at Sep. 30, 2021	(57,360)	$ 9	951,031	(1,008,400)
Ending balance, shares at Sep. 30, 2021		8,498,000
Beginning balance, value at Mar. 31, 2021	(9,478)	$ 8	908,842	(918,328)
Beginning balance, shares at Mar. 31, 2021		7,864,000
Sale of common stock, net of costs	163		163
Shares issued for sale of common stock, net of cost, shares		3,000
Exercise of warrants, net of cashless exercises	249		249
Shares issued for exercise of warrants and options, net of cashless exercises (in shares)		13,000
Vested restricted stock units		19,000
Sale of common stock related to employee stock purchase plan	134		134
Shares issued for sale of common stock related to employee stock purchase plan (in shares)		3,000
Share-based compensation	2,510		2,510
Net income (loss)	(42,652)			(42,652)
Ending balance, value at Jun. 30, 2021	(49,074)	$ 8	911,898	(960,980)
Ending balance, shares at Jun. 30, 2021		7,902,000
Sale of common stock, net of costs	31,819	$ 1	31,818
Shares issued for sale of common stock, net of cost, shares		575,000
Exercise of options	3		3
Vested restricted stock units		21,000
Share-based compensation	7,312		7,312
Net income (loss)	(47,420)			(47,420)
Ending balance, value at Sep. 30, 2021	(57,360)	$ 9	951,031	(1,008,400)
Ending balance, shares at Sep. 30, 2021		8,498,000
Beginning balance, value at Dec. 31, 2021	$ (93,621)	$ 9	957,730	(1,051,360)
Beginning balance, shares at Dec. 31, 2021	8,598,000	8,598,000
Vested restricted stock units		71,000
Share-based compensation	$ 2,062		2,062
Net income (loss)	(49,021)			(49,021)
Ending balance, value at Mar. 31, 2022	(140,580)	$ 9	959,792	(1,100,381)
Ending balance, shares at Mar. 31, 2022		8,669,000
Beginning balance, value at Dec. 31, 2021	$ (93,621)	$ 9	957,730	(1,051,360)
Beginning balance, shares at Dec. 31, 2021	8,598,000	8,598,000
Net income (loss)	$ 34,295
Ending balance, value at Sep. 30, 2022	$ (48,271)	$ 9	968,785	(1,017,065)
Ending balance, shares at Sep. 30, 2022	9,467,000	9,467,000
Beginning balance, value at Mar. 31, 2022	$ (140,580)	$ 9	959,792	(1,100,381)
Beginning balance, shares at Mar. 31, 2022		8,669,000
Shares issued for rounding up of fractional shares in connection with the reverse stock split (in shares)		142,000
Vested restricted stock units		44,000
Sale of common stock related to employee stock purchase plan	14		14
Shares issued for sale of common stock related to employee stock purchase plan (in shares)		5,000
Share-based compensation	2,219		2,219
Net income (loss)	112,281			112,281
Ending balance, value at Jun. 30, 2022	(26,066)	$ 9	962,025	(988,100)
Ending balance, shares at Jun. 30, 2022		8,860,000
Sale of common stock, net of costs	2,454		2,454
Shares issued for sale of common stock, net of cost, shares		565,000
Vested restricted stock units		42,000
Share-based compensation	4,306		4,306
Net income (loss)	(28,965)			(28,965)
Ending balance, value at Sep. 30, 2022	$ (48,271)	$ 9	$ 968,785	$ (1,017,065)
Ending balance, shares at Sep. 30, 2022	9,467,000	9,467,000