Segment Information (Details) - Revenue [Member] |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
Segment Reporting Information [Line Items] | ||||
Total consolidated revenue | 100.00% | 100.00% | 100.00% | 100.00% |
U.S. [Member] | ||||
Segment Reporting Information [Line Items] | ||||
Total consolidated revenue | 61.60% | 64.00% | 62.60% | 66.60% |
Canada [Member] | ||||
Segment Reporting Information [Line Items] | ||||
Total consolidated revenue | 3.90% | 6.00% | 4.20% | 7.00% |
U.K. [Member] | ||||
Segment Reporting Information [Line Items] | ||||
Total consolidated revenue | 20.00% | 22.20% | 20.40% | 20.10% |
Other foreign markets [Member] | ||||
Segment Reporting Information [Line Items] | ||||
Total consolidated revenue | 14.50% | 7.80% | 12.80% | 6.30% |