| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Schedule of income before income tax, domestic and foreign | The components of income before income taxes and non-controlling interests consist of the following for the years ended December 31: | | | | | | | | | | | | | | (in thousands) | | 2016 | | 2015 | | 2014 | | | | | | | | Domestic - Luxembourg | | $ | 8,498 |
| | $ | 27,884 |
| | $ | 124,181 |
| Foreign - U.S. | | 16,655 |
| | 5,944 |
| | 9,575 |
| Foreign - Non-U.S. | | 19,168 |
| | 19,232 |
| | 13,509 |
| | | | | | | | Total | | $ | 44,321 |
| | $ | 53,060 |
| | $ | 147,265 |
|
|
Schedule of income tax provision | The income tax provision consists of the following for the years ended December 31: | | | | | | | | | | | | | | (in thousands) | | 2016 | | 2015 | | 2014 | | | | | | | | Current: | | | | | | | Domestic - Luxembourg | | $ | 160 |
| | $ | 1,787 |
| | $ | 4,415 |
| Foreign - U.S. Federal | | 9,556 |
| | 539 |
| | 75 |
| Foreign - U.S. State | | 258 |
| | 855 |
| | 476 |
| Foreign - Non-U.S. | | 5,558 |
| | 6,405 |
| | 4,046 |
| | | | | | | | | | $ | 15,532 |
| | $ | 9,586 |
| | $ | 9,012 |
| Deferred: | | | | | | | Domestic - Luxembourg | | $ | 432 |
| | $ | — |
| | $ | — |
| Foreign - U.S. Federal | | (3,065 | ) | | (108 | ) | | 1,756 |
| Foreign - U.S. State | | (100 | ) | | (526 | ) | | (281 | ) | Foreign - Non-U.S. | | 136 |
| | (692 | ) | | (309 | ) | | | | | | | | | | $ | (2,597 | ) | | $ | (1,326 | ) | | $ | 1,166 |
| | | | | | | | Total | | $ | 12,935 |
| | $ | 8,260 |
| | $ | 10,178 |
|
|
Summary of tax effects of the temporary differences | A summary of the tax effects of the temporary differences is as follows for the years ended December 31: | | | | | | | | | | (in thousands) | | 2016 | | 2015 | | | | | | Non-current deferred tax assets: | | | | | Net operating loss carryforwards | | $ | 5,891 |
| | $ | 5,417 |
| U.S. federal and state tax credits | | 316 |
| | 2,577 |
| Non-U.S. deferred tax assets | | 3,674 |
| | 2,472 |
| Share-based compensation | | 2,486 |
| | 1,750 |
| Accrued expenses | | 11,527 |
| | 7,730 |
| Non-current deferred tax liabilities: | | | | | Intangible assets | | (4,203 | ) | | (4,508 | ) | Depreciation | | (6,964 | ) | | (7,446 | ) | Non-U.S. deferred tax liability | | (1,342 | ) | | — |
| Other | | (626 | ) | | (815 | ) | | | 10,759 |
| | 7,177 |
| | | | | | Valuation allowance | | (3,467 | ) | | (3,558 | ) | | | | | | Non-current deferred tax assets, net | | $ | 7,292 |
| | $ | 3,619 |
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Schedule of the reconciliation of income tax provision to the Luxembourg statutory income tax rate | The following table reconciles the Luxembourg statutory tax rate to our effective tax rate for the years ended December 31: | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | | | | | | | | Statutory tax rate | | 29.22 | % | | 29.22 | % | | 29.22 | % | Permanent difference related to Luxembourg intangible assets | | — |
| | (13.56 | ) | | (22.60 | ) | Change in valuation allowance | | (0.08 | ) | | 0.83 |
| | (0.05 | ) | State tax expense | | 2.30 |
| | 0.29 |
| | 0.03 |
| Tax credits | | (1.81 | ) | | (2.34 | ) | | (0.71 | ) | Uncertain taxes | | (3.65 | ) | | 1.39 |
| | 0.88 |
| Other | | 3.20 |
| | (0.26 | ) | | 0.14 |
| | | | | | | | Effective tax rate | | 29.18 | % | | 15.57 | % | | 6.91 | % |
|
Summary of income tax contingencies | The following table reconciles the amount of unrecognized tax benefits for the years ended December 31: | | | | | | | | | | (in thousands) | | 2016 | | 2015 | | | | | | Amount of unrecognized tax benefits as of the beginning of the year | | $ | 2,005 |
| | $ | 1,153 |
| Decreases as a result of tax positions taken in a prior period | | (1,527 | ) | | — |
| Increases as a result of tax positions taken in a prior period | | 60 |
| | 638 |
| Increases as a result of tax positions taken in the current period | | 220 |
| | 214 |
| | | | | | Amount of unrecognized tax benefits as of the end of the year | | $ | 758 |
| | $ | 2,005 |
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