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Fair Value Measurements - Business Combination Contingent Consideration - Additional Information (Details) | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2020 EUR (€) | Oct. 02, 2020 USD ($) Installment | Oct. 02, 2020 EUR (€) | Jul. 31, 2019 USD ($) | Jul. 31, 2019 EUR (€) | Apr. 16, 2019 USD ($) | Apr. 16, 2019 EUR (€)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Payment for contingent consideration | $ 1,100,000 | € 1,000,000.0 | $ 1,135,000 |  |  |  |  |
ARGES GmbH |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Undiscounted low range of contingent consideration |  |  |  |  |  | € 0 |  |
Undiscounted high range of contingent consideration |  |  |  |  |  | 10,000,000.0 |  |
Fair value of contingent consideration |  |  | $ 7,600,000 | € 6,400,000 | $ 7,900,000 | € 7,100,000 |  |
Ingenia-CAT, S.L. |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Undiscounted low range of contingent consideration |  |  |  |  |  |  |  | € 0
Undiscounted high range of contingent consideration |  |  |  |  |  |  |  | 8,000,000.0
Fair value of contingent consideration |  |  |  |  |  |  | $ 6,600,000 | € 5,800,000
Number of contingent consideration annual installments | Installment |  |  | 3 |  |  |  |  |
Changes in fair value of contingent consideration | $ |  |  | $ 0 |  |  |  |  |

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