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Entity Level Information - Additional Information (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) Segment | Dec. 31, 2019 USD ($)
Revenues From External Customers And Long Lived Assets [Line Items] |  |
Number of reporting segment | Segment | 1 |
Allowance for credit losses | $ 65 | $ 52
Receivables | Customer Concentration | Customer One |  |
Revenues From External Customers And Long Lived Assets [Line Items] |  |
Concentration risk percentage | 23.00% | 40.00%
Receivables | Customer Concentration | Customer Two |  |
Revenues From External Customers And Long Lived Assets [Line Items] |  |
Concentration risk percentage |  | 28.00%
U.S [Member] |  |
Revenues From External Customers And Long Lived Assets [Line Items] |  |
Long-lived assets | $ 3,040 | $ 5,976
Asia Pacific [Member] |  |
Revenues From External Customers And Long Lived Assets [Line Items] |  |
Long-lived assets | $ 782 | $ 1,161

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