Property, Plant and Equipment (Detail) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | $ 177,772 | $ 240,936 |
| Less: accumulated depreciation | (127,420) | (155,287) |
| Total property, plant and equipment, net | 50,352 | 85,649 |
| Construction equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | 61,924 | 86,174 |
| Furniture and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | 31,921 | 38,477 |
| Land and buildings | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | 1,725 | 8,664 |
| Transportation equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | 75,395 | 98,185 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | 6,725 | 9,354 |
| Marine equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment | $ 82 | $ 82 |