Accrued Expenses and Other Current Liabilities - Product Warranty Liability (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Dec. 31, 2015 |
|
| Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] | ||||||
| Balance at the beginning of the period | $ 4,294 | $ 3,167 | $ 4,152 | $ 2,614 | ||
| Warranty expense | 1,149 | 1,579 | 3,288 | 3,300 | ||
| Warranty claims settled | (1,101) | (992) | (3,098) | (2,160) | ||
| Balance at the end of the period | 4,342 | 3,754 | 4,342 | 3,754 | ||
| Composition of balance: | ||||||
| Short-term | $ 1,640 | $ 1,592 | ||||
| Long-term | 2,702 | 2,560 | ||||
| Total warranty balance | $ 4,294 | $ 3,167 | $ 4,152 | $ 2,614 | $ 4,342 | $ 4,152 |