1. Summary of Significant Accounting Policies (Detail - Property Plant and Equipment) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Property, Plant and Equipment [Line Items] | ||
| Land | $ 5,260 | $ 5,260 |
| Buildings | 31,914 | 31,751 |
| Machinery and equipment | 113,633 | 105,160 |
| Total property, plant and equipment | $ 150,807 | $ 142,171 |
| Building And Building Improvements [Member] | Minimum [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, useful lives | 30 years | |
| Building And Building Improvements [Member] | Maximum [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, useful lives | 40 years | |
| Machinery And Equipment [Member] | Minimum [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, useful lives | 3 years | |
| Machinery And Equipment [Member] | Maximum [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, useful lives | 15 years |