Restructuring Gain - Additional Information (Detail) - USD ($) $ in Thousands |
9 Months Ended | |
|---|---|---|
Sep. 30, 2016 |
Dec. 31, 2015 |
|
| Restructuring Cost and Reserve [Line Items] | ||
| Gain on sale of machinery as part of restructuring | $ 7,785 | |
| Korea [Member] | ||
| Restructuring Cost and Reserve [Line Items] | ||
| Gain on sale of machinery as part of restructuring | $ 7,785 | |
| Restructuring related deposits | $ 8,165 |