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Acquisitions - Schedule of Supplemental Pro Forma Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
OGSystems |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Pro forma revenue | $ 979,459 | $ 989,742 | $ 1,950,452 | $ 1,896,102
Pro forma net income including noncontrolling interests | 32,165 | 40,976 | 47,628 | 58,433
QRC Technologies |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Pro forma revenue | 979,459 | 1,001,145 | 1,950,452 | 1,912,142
Pro forma net income including noncontrolling interests | $ 31,235 | $ 40,772 | $ 46,971 | $ 51,617

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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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