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Financial Statement Details - Rental Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Rental assets $ 9,967 $ 21,863
Less—accumulated depreciation (5,392) (15,754)
Total rental assets $ 4,575 $ 6,109