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v3.20.2

Risks and Uncertainties - Additional Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) Customer | Jun. 30, 2019 USD ($) | Sep. 30, 2019 USD ($)
Concentration Risk [Line Items] |  |  |  |  |  |  |  |
Number of customers affiliated with common parent | Customer |  |  |  |  |  | 3 |  |
Revenue | $ 22,703 | $ 25,907 | $ 17,705 | $ 22,873 | $ 43,612 | $ 66,315 | $ 66,871 |
Trade accounts receivables | 13,685 |  |  |  |  | 13,685 |  | $ 24,193
Sales Revenue | Customer Concentration Risk | Three Customers Affiliated with Common Parent |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  | 34,900 |  |
Accounts Receivable | Credit Concentration Risk | Three Customers Affiliated with Common Parent |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |
Trade accounts receivables | $ 10,400 |  |  |  |  | $ 10,400 |  |

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