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Business Combinations - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 01, 2018 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |  |  |  |
Drawdown from existing revolving credit facility |  |  |  | $ 8,800 |  | $ 87,650 | $ 0
Derivative loss |  |  |  |  |  | 29,000 |
Hermes |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Remaining interest contributed to employee benefit trust | 10.50% |  |  |  |  |  |
Hermes | BTPS |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Ownership interest retained | 29.50% |  |  |  |  |  |
Hermes |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payments to acquire business |  |  | $ 344,300 |  | $ 343,500 |  |
Cash received from acquisition |  | $ 800 |  |  |  |  |
Drawdown from existing revolving credit facility | $ 18,000 |  |  |  |  |  |
Transaction costs expensed |  |  |  |  |  | 13,300 |
Foreign exchange gain |  |  |  |  |  | $ 1,700 |
Increase in Intangible Assets |  | 43,800 |  |  |  |  |
Increase in Other Long-Term Assets |  | 5,000 |  |  |  |  |
Increase in Long-Term Deferred Tax Liability |  | 8,200 |  |  |  |  |
Decrease in Goodwill |  | $ 41,800 |  |  |  |  |
Revenue |  |  | 100,800 | 198,300 |  |  |
Net income |  |  | $ 9,600 | $ 10,400 |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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