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Commitments And Contingencies (Expense Associated with Operating Leases) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Cost Of Revenue [Member]        
Operating rent expense $ 20 $ 14 $ 59 $ 42
Variable rent expense 10 8 30 23
Research And Development [Member]        
Operating rent expense 6 13 20 35
Variable rent expense 5 12 16 25
Sales And Marketing [Member]        
Operating rent expense 9 8 28 25
Variable rent expense 8 11 26 30
General And Administrative [Member]        
Operating rent expense 16 16 49 51
Variable rent expense $ 16 $ 16 $ 51 $ 46