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Nature of Business and Significant Accounting Policies - Narrative (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) segment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Number of reportable segments | segment | 1 |  |
Contract liabilities | $ 3,800,000 | $ 3,000,000 |
Accounts receivable, net | 26,781,000 | 29,940,000 |
Allowance on accounts receivable | 408,000 | 1,384,000 |
Impairment of indefinite-lived intangible assets | 0 | 0 | $ 0
Impairment of capitalized software | 1,197,000 | 1,410,000 | 0
Impairment of long-lived assets | $ 0 | $ 0 | $ 0
Minimum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
General warranty period | 12 months |  |
Maximum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
General warranty period | 36 months |  |
Buildings |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 50 years |  |
Leasehold improvements | Maximum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 5 years |  |
Product tooling |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 13 months |  |
Computer equipment, purchased software, vehicles, production equipment, and furniture and fixtures | Minimum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 2 years |  |
Computer equipment, purchased software, vehicles, production equipment, and furniture and fixtures | Maximum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 7 years |  |
Rental assets | Minimum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 3 years |  |
Rental assets | Maximum |  |  |
Nature Of Business And Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment useful lives | 4 years |  |

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522 + Details
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