Description of Business and Summary of Significant Accounting Policies (Warranty) (Details) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands |
Total |
|---|---|
| Product Warranty | |
| Product warranty period | 2 years |
| Changes in the product warranty liability | |
| Balance at beginning of period | $ 1,191 |
| Warranty costs accrued | 1,116 |
| Warranty claims | (963) |
| Balance at end of period | $ 1,344 |