Organization and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands, shares in Millions			3 Months Ended		6 Months Ended
	Jun. 10, 2024	Sep. 27, 2022 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Segment $ / shares	Jun. 30, 2023 USD ($)	Jun. 04, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) $ / shares
Organization And Basis Of Presentation [Line Items]
Warrant exercise price per share | $ / shares			$ 10.95		$ 10.95			$ 12
Cash and cash equivalents and short-term investments			$ 24,200		$ 24,200
Cash and cash equivalents			15,703		15,703			$ 14,009
Accumulated deficit			(444,140)		(444,140)			$ (430,013)
Net loss			(7,446)	$ (18,097)	(19,635)	$ (33,739)
Cash and cash equivalents used in operations					17,407	$ 26,341
Gain on sale of discontinued operations, net of tax					5,703
Principal payments on outstanding borrowings			15,000		$ 15,000
Operating and Reportable segments | Segment					2
Minimum market capitalization							$ 5,000
Stock bid price | $ / shares							$ 0.1
Term Loan
Organization And Basis Of Presentation [Line Items]
Principal outstanding			20,500		$ 20,500
Private Placement
Organization And Basis Of Presentation [Line Items]
Common stock shares issued | shares		23.0
Public offering price per share | $ / shares		$ 0.95
Proceeds from issuance of common stock net of underwriting discounts and commissions and other offering expenses		$ 59,000
Prefunded Warrants
Organization And Basis Of Presentation [Line Items]
Common stock shares issued | shares		43.3
Public offering price per share | $ / shares		$ 0.949
Warrant exercise price per share | $ / shares		$ 0.001
Software
Organization And Basis Of Presentation [Line Items]
Substantial assets			$ 0		0
Substantial operations					$ 0
Minimum
Organization And Basis Of Presentation [Line Items]
Reverse stock split ratio	0.1
Maximum
Organization And Basis Of Presentation [Line Items]
Reverse stock split ratio	0.005