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Current Expected Credit Losses - Amortized Cost Basis in Sales-Type Leases based on Payment Activity (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
Sales Type Lease Net Investment In Lease Credit Quality Indicator [Line Items]      
2021 $ 14    
2020 11    
Net investment in sales-type leases 25 $ 781 $ 1,600
Payment Performance Performing [Member]      
Sales Type Lease Net Investment In Lease Credit Quality Indicator [Line Items]      
2021 14    
2020 11    
Net investment in sales-type leases $ 25