Annual report pursuant to Section 13 and 15(d)

Geographic Information (Details)

v3.3.1.900
Geographic Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Long-lived assets $ 249,637       $ 225,144       $ 249,637 $ 225,144  
Revenues 173,768 $ 189,142 $ 152,489 $ 115,433 181,061 $ 168,891 $ 142,558 $ 100,731 630,832 593,241 $ 574,171
United States                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Long-lived assets 235,298       207,858       235,298 207,858  
Revenues                 567,815 509,200 501,558
CANADA                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Long-lived assets 14,233       17,145       14,233 17,145  
Revenues                 48,968 70,069 68,797
Other Countries                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Long-lived assets $ 106       $ 141       106 141  
Revenues                 $ 14,049 $ 13,972 $ 3,816