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Debt (Tables) | 3 Months Ended
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Mar. 31, 2018
Debt Disclosure [Abstract] |
Schedule of Debt [Table Text Block] | The components of our borrowings were as follows:
| March 31, 2018 |  | December 31, 2017
| (in thousands)
Credit facility: |  |  |
USD denominated term loan | $ | 650,000 |  |  | $ | 194,063 |
Multicurrency revolving line of credit | 95,777 |  |  | 125,414 |
Senior notes | 400,000 |  |  | 300,000 |
Total debt | 1,145,777 |  |  | 619,477 |
Less: current portion of debt | 16,250 |  |  | 19,688 |
Less: unamortized prepaid debt fees - term loan | 5,912 |  |  | 629 |
Less: unamortized prepaid debt fees - senior notes | 18,077 |  |  | 5,588 |
Long-term debt | $ | 1,105,538 |  |  | $ | 593,572 |
Schedule of Maturities of Long-term Debt [Table Text Block] | The amount of required minimum principal payments on our long-term debt in aggregate over the next five years, are as follows:
Year Ending December 31, |  | Minimum Payments
|  | (in thousands)
2018 (amount remaining at March 31, 2018) |  | $ | 12,188 |
2019 |  | 28,438 |
2020 |  | 44,777 |
2021 |  | 60,937 |
2022 |  | 65,000 |
2023 |  | 534,437 |
Total minimum payments on debt |  | $ | 745,777 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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