| Schedule of Goodwill [Table Text Block] |
The following table summarizes the Company's goodwill activity by segment for the six months ended June 30, 2014 (in thousands): | | | | | | | | | | | | | | | | | | | | North America | | EMEA | | Rest of World | | Consolidated | Balance as of December 31, 2013 | | $ | 85,457 |
| | $ | 115,669 |
| | $ | 19,701 |
| | $ | 220,827 |
| Goodwill related to acquisitions | | 11,640 |
| | — |
| | 220,592 |
| | 232,232 |
| Other adjustments(1) | | 115 |
| | (881 | ) | | 8,679 |
| | 7,913 |
| Balance as of June 30, 2014 | | $ | 97,212 |
| | $ | 114,788 |
| | $ | 248,972 |
| | $ | 460,972 |
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| | (1) | Includes changes in foreign exchange rates for goodwill and purchase accounting adjustments. |
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| Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block] |
The following tables summarize the Company's other intangible assets (in thousands): | | | | | | | | | | | | | | | | June 30, 2014 | Asset Category | | Gross Carrying Value | | Accumulated Amortization | | Net Carrying Value | Subscriber relationships | | $ | 110,648 |
| | $ | 42,068 |
| | $ | 68,580 |
| Merchant relationships | | 42,551 |
| | 14,253 |
| | 28,298 |
| Trade names | | 31,265 |
| | 9,155 |
| | 22,110 |
| Developed technology | | 24,227 |
| | 21,577 |
| | 2,650 |
| Brand relationships | | 7,690 |
| | 701 |
| | 6,989 |
| Other intangible assets | | 17,162 |
| | 9,607 |
| | 7,555 |
| Total | | $ | 233,543 |
| | $ | 97,361 |
| | $ | 136,182 |
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| | | | | | | | | | | | | | | | December 31, 2013 | Asset Category | | Gross Carrying Value | | Accumulated Amortization | | Net Carrying Value | Subscriber relationships | | $ | 45,541 |
| | $ | 30,866 |
| | $ | 14,675 |
| Merchant relationships | | 9,186 |
| | 7,991 |
| | 1,195 |
| Trade names | | 6,739 |
| | 6,739 |
| | — |
| Developed technology | | 23,038 |
| | 19,547 |
| | 3,491 |
| Other intangible assets | | 16,776 |
| | 7,694 |
| | 9,082 |
| Total | | $ | 101,280 |
| | $ | 72,837 |
| | $ | 28,443 |
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| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
As of June 30, 2014, the Company's estimated future amortization expense related to intangible assets is as follows (in thousands): | | | | | | Remaining amounts in 2014 | | $ | 23,256 |
| 2015 | | 40,691 |
| 2016 | | 34,170 |
| 2017 | | 19,252 |
| 2018 | | 18,741 |
| Thereafter | | 72 |
| Total | | $ | 136,182 |
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