Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Restated) (Details)

v3.8.0.1
Segment Information (Restated) (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 55.50% 62.80% 55.20% 63.10%
Canada [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenue 2.70% 3.70% 2.80% 4.40%
U.K. [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenue 22.10% 19.10% 23.10% 20.60%
Other foreign markets [Member]        
Segment Reporting Information [Line Items]        
Total consolidated revenue 19.70% 14.40% 18.90% 11.90%