Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		3,770,265	20,680,186
Beginning balance at Dec. 31, 2021	$ 45,555	$ 0	$ 2	$ 436,721	$ (391,168)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends declared	(2,239)			(2,239)
Common stock issued relating to settlement of contingent consideration (in shares)			24,333
Common stock issued relating to settlement of contingent consideration	213			213
Common stock issued for services (in shares)			55,555
Common stock issued for services	102			102
Restricted stock units vested, net (in shares)			1,259
Restricted stock units vested, net	(2)			(2)
401(k) employer match (in shares)			69,987
401(k) employer match	188			188
Stock-based compensation expense	2,911			2,911
Net loss	(14,645)				(14,645)
Ending balance (in shares) at Mar. 31, 2022		3,770,265	20,831,320
Ending balance at Mar. 31, 2022	32,083	$ 0	$ 2	437,894	(405,813)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		3,770,265	20,831,320
Beginning balance (in shares)		3,770,265	27,167,479
Beginning balance at Dec. 31, 2022	5,677	$ 0	$ 3	448,415	(442,741)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued for services (in shares)			2,038,133
Warrants issued in connection with Keep Well Notes	10,797			10,797
Loss on extinguishment of debt with related party	(2,153)			(2,153)
Restricted stock units vested, net (in shares)			1,253
Restricted stock units vested, net	(2)			(2)
401(k) employer match (in shares)			113,383
401(k) employer match	0			0
Stock-based compensation expense	651			651
Net loss	(8,350)				(8,350)
Ending balance (in shares) at Mar. 31, 2023		3,770,265	29,320,248
Ending balance at Mar. 31, 2023	$ 6,620	$ 0	$ 3	$ 457,708	$ (451,091)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		3,770,265	29,320,248