v3.20.2

Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2015
Related Party Transaction [Line Items] |  |  |  |  |
Other income, net | $ 947 | $ 25 | $ 1,202 | $ 526 |
Corporate Joint Venture |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Other income, net |  | $ 100 | $ 300 | $ 500 |
Corporate Joint Venture | Maximum |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Other income, net | $ 100 |  |  |  |
Corporate Joint Venture | Doosan-PSI, LLC |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Investment amount with related party |  |  |  |  | $ 1,000
Percent of noncontrolling interest |  |  |  |  | 50.00%

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