Restructuring (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Restructuring Reserve [Roll Forward] | ||
| Accrued restructuring balance, beginning of period | $ 0 | $ 0 |
| Restructuring costs | 2,103 | 1,311 |
| Cash payments | (1,533) | (530) |
| Accrued restructuring balance, end of period | 570 | 0 |
| Employee severance [Member] | ||
| Restructuring Reserve [Roll Forward] | ||
| Restructuring costs | 199 | |
| Employee severance [Member] | Haywood, California [Member] | ||
| Restructuring Reserve [Roll Forward] | ||
| Restructuring costs | 1,789 | |
| Lease related [Member] | ||
| Restructuring Reserve [Roll Forward] | ||
| Restructuring costs | $ 331 | |
| Lease related [Member] | Haywood, California [Member] | ||
| Restructuring Reserve [Roll Forward] | ||
| Restructuring costs | $ 314 | |