Segment Information (Details) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 100.00% | 100.00% | 100.00% | 100.00% |
| North America [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 52.50% | 58.20% | 57.30% | 58.00% |
| U.K. [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 23.60% | 22.10% | 22.00% | 23.10% |
| Other foreign markets [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 23.90% | 19.70% | 20.70% | 18.90% |
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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