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The Company and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2019
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Net losses | $ (7,043,000) | $ (6,754,000) | $ (5,430,000) | $ (4,157,000) | $ (13,797,000) | $ (9,586,000) | $ (10,800,000) |
Accumulated deficit | $ 130,996,000 |  |  |  | $ 130,996,000 |  | 117,199,000 |
Maximum specific allowance as percentage of invoice value for problematic customer balances | 100.00% |  |  |  | 100.00% |  |  |
Allowance for doubtful accounts receivable | $ 0 |  |  |  | $ 0 |  | $ 61,000 |
Scientific research and experimental development cost tax credit eligible percentage |  |  |  |  | 15.00% |  |  |
Amortization | 500,000 |  | $ 0 |  | $ 1,000,000.0 | 0 |  |
Inventory write-downs |  |  |  |  | $ 160,000 | 37,000 |  |
Accounting Standards Update [Extensible List] |  |  |  |  |  |  |  | us-gaap:AccountingStandardsUpdate201602Member
Lease, Practical Expedients, Package |  |  |  |  |  |  |  | true
Payment terms |  |  |  |  | The Company sells its products both directly to customers and through distributors generally under agreements with payment terms typically 60 days or less. |  |  |
Deferred revenue, revenue recognized |  |  |  |  | $ 61,000 |  |  |
Period payments due from customers |  |  |  |  | 60 days |  |  |
Revenue, practical expedient, financing component |  |  |  |  | true |  |  |
Payroll subsidies |  |  |  |  |  | 861,352 |  |
Rent subsidies |  |  |  |  |  | $ 160,865 |  |
Minimum |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Estimated useful lives of long-lived assets |  |  |  |  | 3 years |  |  |
Maximum |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Estimated useful lives of long-lived assets |  |  |  |  | 10 years |  |  |
Scientific Research And Experimental Development |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Unused tax credits carried back period |  |  |  |  | 3 years |  |  |
Unused tax credits forward period |  |  |  |  | 20 years |  |  |
Developed Technology Rights |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Amortization | 300,000 |  |  |  | $ 700,000 |  |  |
Developed Technology Rights | Minimum |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Estimated useful lives of long-lived assets |  |  |  |  | 4 years |  |  |
Customer Relationships |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Estimated useful lives of long-lived assets |  |  |  |  | 4 years |  |  |
Amortization | $ 200,000 |  |  |  | $ 300,000 |  |  |

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