Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.19.1
Segment Information (Details)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Segment Reporting Information [Line Items]    
Total consolidated revenue 100.00% 100.00%
North America [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 61.00% 62.00%
U.K. [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 23.60% 20.40%
Other foreign markets [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 15.40% 17.60%