Accrued and Other Current Liabilities, and Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accrued and Other Current Liabilities, and Other Liabilities
Receipt in advance for sale of an investment (1)	$ 16,921
Payables related to property and equipment	3,111	$ 3,288
Payroll and welfare payable	2,037	3,336
Lease liabilities-current	$ 922	$ 1,061
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued and other current liabilities	Accrued and other current liabilities
Value-added tax and other tax payable	$ 255	$ 639
Deferred income-current	54	60
Other	351	13
Accrued and other current liabilities	23,651	8,397
Profit-sharing liability to Juventas	11,821	13,220
Lease liabilities-noncurrent	$ 634	$ 1,105
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities	Other Liabilities
Other Liabilities	$ 12,455	$ 14,325