Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 25, 2022 USD ($)	Jun. 30, 2023 USD ($) covenant	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) covenant	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jun. 07, 2021 USD ($)
Business Acquisition [Line Items]
Inventory serving as collateral for short term borrowing		$ 4,400		$ 4,400		$ 6,100
Product warranty accrual, noncurrent		$ 1,000		$ 1,000		600
Cost method investments							$ 7,500
Number of covenants breached | covenant		2		2
Cash and cash equivalents, continuing and discontinuing		$ 11,800		$ 11,800
Cash and cash equivalents		2,895		2,895		3,759
Cash and cash equivalents, discontinued operations		8,900		8,900
Accounts payable and accrued expenses		70,800		70,800
Other current liabilities		13,300		13,300
Current portion of operating lease liabilities		3,383		3,383		3,189
Debt, long-term and short-term, combined amount		15,300		15,300
Net loss		35,497	$ 37,767	119,814	$ 66,278
Accumulated deficit		986,596		986,596		866,450
Proceeds from sale of preferred shares, issuance of a convertible note and sale of financial assets		31,100
Other Commitment, Aggregate Committed Investment
Business Acquisition [Line Items]
Investments		7,000		7,000
CHINA
Business Acquisition [Line Items]
Cash and cash equivalents		5,600		5,600
Timios | Discontinued Operations, Disposed of by Sale
Business Acquisition [Line Items]
Proceeds from disposal	$ 450
Transactions cost	150
Extinguishment of outstanding payables	$ 2,400
Cash and cash equivalents, discontinued operations		$ 8,876		$ 8,876		$ 18,169