Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Segments (Details)

v3.3.1.900
Summary of Significant Accounting Policies - Segments (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
Jun. 30, 2014
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
item
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Segment Reporting                      
Number of operating segments | item                 1    
Maximum percentage of net sales outside North America                 1.00%    
Net sales $ 118,810 $ 120,565 $ 107,143 $ 53,890 $ 100,054 $ 78,836 $ 88,225 $ 36,396 $ 400,408 $ 303,511 $ 194,320
Equipment                      
Segment Reporting                      
Net sales                 349,423 254,234 164,460
Parts and accessories                      
Segment Reporting                      
Net sales                 $ 50,985 $ 49,277 $ 29,860