Description of Business and Summary of Significant Accounting Policies (Concentration) (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2015
USD ($)
|
Sep. 30, 2014
USD ($)
|
Sep. 30, 2015
USD ($)
item
|
Sep. 30, 2014
USD ($)
|
|
| Revenue from U.S., Canadian and all other international dealers and distributors combined | ||||
| Total revenue | $ 43,558 | $ 39,120 | $ 120,282 | $ 107,636 |
| International revenue (excluding Canada) as a percent of total revenue | 24.00% | 24.00% | 24.00% | 24.00% |
| Number of operating segments | item | 1 | |||
| United States | ||||
| Revenue from U.S., Canadian and all other international dealers and distributors combined | ||||
| Total revenue | $ 29,300 | $ 25,517 | $ 80,571 | $ 71,211 |
| Canada | ||||
| Revenue from U.S., Canadian and all other international dealers and distributors combined | ||||
| Total revenue | 3,702 | 4,140 | 10,910 | 10,802 |
| All other international sources | ||||
| Revenue from U.S., Canadian and all other international dealers and distributors combined | ||||
| Total revenue | $ 10,556 | $ 9,463 | $ 28,801 | $ 25,623 |