CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2021	$ 3	$ 578,626	$ (92)	$ (359,820)	$ 218,717
Balance, at beginning (in shares) at Dec. 31, 2021	2,634,110
Issuance of common stock under At-the-market offering, net of transactional expenses of $3,078	$ 9	85,284			85,293
Issuance of common stock under At-the-market offering, net of transactional expenses of $3,078 (in shares)	9,017,307
Issuance of commitment shares under 2022 Purchase agreement
Issuance of commitment shares under 2022 Purchase agreement (in shares)	100,000
Issuance of common stock under 2022 Purchase agreement		488			488
Issuance of common stock under 2022 Purchase agreement shares	160,000
Issuance of common stock under 2021 Purchase agreement		8,682			8,682
Issuance of common stock under 2021 Purchase Agreement (in shares)	456,557
Preferred stock deemed dividend		(6,659)			(6,659)
Employee stock purchase plan		40			40
Employee stock purchase plan (in shares)	646
Stock-based compensation		10,914			10,914
Foreign currency transaction gain			(75)		(75)
Net loss				(110,218)	(110,218)
Ending balance, value at Dec. 31, 2022	$ 12	677,375	(167)	(470,038)	207,182
Balance, at end (in shares) at Dec. 31, 2022	12,368,620
Repurchase of common stock under Share Repurchase Program, including transactional expenses of $334	$ (3)			(13,962)	(13,965)
Repurchase of common stock under Share Repurchase Program, including transactional expenses of $334 (in shares)	(2,672,044)
Issuance of common stock under 2022 Purchase agreement		441			441
Issuance of common stock under 2022 Purchase agreement shares	96,000
Issuance of common stock under At-the-market offering, net of transactional expenses of $137	$ 1	3,023			3,024
Issuance of common stock under At-the-market offering, net of transactional expenses of $137 (in shares)	954,766
Issuance of common stock and warrants under AGP Financing, net of transactional expenses of $2,663	$ 32	16,230			16,262
Issuance of common stock and warrants under AGP Financing, net of transactional expenses of $3,541 (in shares)	31,923,242
Issuance of common stock upon exercise of prefunded common warrants	$ 17	(17)
Issuance of common stock upon exercise of prefunded common warrants (in shares)	15,929,010
Employee stock purchase plan		29			29
Employee stock purchase plan (in shares)	14,999
Stock-based compensation		9,275			9,275
Foreign currency transaction gain			(65)		(65)
Net loss				(116,658)	(116,658)
Ending balance, value at Dec. 31, 2023	$ 59	$ 706,356	$ (232)	$ (600,658)	$ 105,525
Balance, at end (in shares) at Dec. 31, 2023	58,614,593