Condensed Consolidated Statements of Stockholders' Deficit - USD ($) shares in Thousands, $ in Thousands	Total	Convertible Note Interest The Mann Group L L C	Common Stock	Common Stock Convertible Note Interest The Mann Group L L C	Additional Paid-in Capital	Additional Paid-in Capital Convertible Note Interest The Mann Group L L C	Accumulated Deficit
Beginning Balance at Dec. 31, 2022	$ (250,538)		$ 2,638		$ 2,964,293		$ (3,217,469)
Beginning Balance (in shares) at Dec. 31, 2022			263,793
Issuance of common stock associated with at-the-market placement	1,199		$ 3		1,196
Issuance of common stock associated with at-the-market placement (in shares)			269
Issuance costs associated with at-the- market placement	(24)				(24)
Net issuance of common stock associated with stock options and restricted stock units	52		$ 2		50
Net issuance of common stock associated with stock options and restricted stock units (in shares)			206
Issuance of common stock pursuant to conversion notes		$ 55				$ 55
Issuance of common stock pursuant to conversion notes (in shares)				11
Stock-based compensation expense	3,655				3,655
Net loss income	(9,795)						(9,795)
Ending Balance at Mar. 31, 2023	(255,396)		$ 2,643		2,969,225		(3,227,264)
Ending Balance (in shares) at Mar. 31, 2023			264,279
Beginning Balance at Dec. 31, 2023	(246,168)		$ 2,700		2,980,539		(3,229,407)
Beginning Balance (in shares) at Dec. 31, 2023			270,034
Issuance of common stock associated with at-the-market placement	1,361				1,361
Issuance of common stock associated with at-the-market placement (in shares)			416
Net issuance of common stock associated with stock options and restricted stock units	266		$ 3		263
Net issuance of common stock associated with stock options and restricted stock units (in shares)			337
Issuance of common stock pursuant to conversion notes		$ 56				$ 56
Issuance of common stock pursuant to conversion notes (in shares)				15
Stock-based compensation expense	3,885				3,885
Net loss income	10,630						10,630
Ending Balance at Mar. 31, 2024	$ (229,970)		$ 2,703		$ 2,986,104		$ (3,218,777)
Ending Balance (in shares) at Mar. 31, 2024			270,802