Annual report pursuant to Section 13 and 15(d)

Segment Information (Details)

v3.7.0.1
Segment Information (Details) - Revenue [Member]
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Information [Line Items]    
Total consolidated revenue 100.00% 100.00%
U.S. [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 61.40% 66.80%
Canada [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 3.80% 6.40%
U.K. [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 19.90% 19.90%
Other foreign markets [Member]    
Segment Reporting Information [Line Items]    
Total consolidated revenue 14.90% 6.90%