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Significant Balance Sheet Components - Schedule of Inventory (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Significant Balance Sheet Components [Abstract] |  |
Devices - for resale | $ 2,952 | $ 7,792
Raw materials | 1,986 | 2,590
Accessories | 606 | 962
Total inventory | $ 5,544 | $ 11,344

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- Definition Inventory accessories. + References No definition available. + Details
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- Definition Inventory devices for resale. + References No definition available. + Details
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- Definition Significant balance sheet components. + References No definition available. + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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