Segment Information (Details) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 100.00% | |||
| Revenue [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 100.00% | 100.00% | 100.00% | 100.00% |
| Revenue [Member] | United States [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 64.90% | 75.80% | 67.90% | 75.50% |
| Revenue [Member] | Canada [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 8.30% | 6.50% | 7.60% | 6.50% |
| Revenue [Member] | U.K. [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 19.40% | 16.10% | 19.00% | 16.40% |
| Revenue [Member] | Other foreign markets [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Total consolidated revenue | 7.40% | 1.60% | 5.50% | 1.60% |