Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.7.0.1
Segment Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
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 55.30% 62.80% 56.20% 63.10%
Canada [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenue 2.10% 3.70% 2.40% 4.40%
U.K. [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenue 22.50% 19.10% 22.40% 20.60%
Other foreign markets [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenue 20.10% 14.40% 19.00% 11.90%