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Commitments and Contingencies - Contingent Acquisition Obligations (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 | Sep. 30, 2020 | Sep. 30, 2019 | Jul. 31, 2020
Contingent Acquisition Obligations |  |  |  |
Remaining maximum amount of contingent consideration |  |  |  | $ 12,000
Beginning fair value |  | $ 13,867 |  |
Addition of contingent earnout obligations |  | 7,304 |  |
Foreign currency translation adjustment |  | 196 |  |
Changes in fair value for contingent earnout obligations |  | (352) |  |
Ending fair value |  | 21,015 |  |
Certain acquisitions |  |  |  |
Contingent Acquisition Obligations |  |  |  |
Remaining maximum amount of contingent consideration |  | 35,100 |  |
Contingent payment made |  | $ 100 | $ 100 |
Mr. Chopra, Chief Executive Officer | Deferred bonus |  |  |  |
Indemnifications and Certain Employment-Related Contingencies |  |  |  |
Bonus payment on or within 45 days of January 1, 2024 contingent upon continued employment through that date | $ 13,500 |  |  |
Maximum number of days after January 1, 2024, bonus payment due | 45 days |  |  |

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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e7008-128479 + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 + Details
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