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Balance Sheet Components (Changes in Reserve for Product Warranties) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Balance Sheet Components [Abstract]        
Balance at beginning of period $ 1,609 $ 271 $ 594 $ 161
Additions charged to cost of product revenue 779 945 2,644 1,560
Repairs and replacements (622) (683) (1,472) (1,188)
Balance at end of period $ 1,766 $ 533 $ 1,766 $ 533