XML 32 R23.htm IDEA: XBRL DOCUMENT v3.22.1
Summary of Significant Accounting Policies - Foreign Operations (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]    
Assets $ 8,644 $ 9,363
CHINA    
Property, Plant and Equipment [Line Items]    
Assets 227 $ 274
Registered capital requirement $ 350