Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Restructuring Cost and Reserve [Line Items] | |||
| Impairment of finite-lived intangible assets | $ 534 | ||
| Amortization of intangibles | $ 9,874 | $ 9,885 | $ 9,907 |
| Minimum | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Estimated useful lives of intangible asset | 5 years | ||
| Maximum | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Estimated useful lives of intangible asset | 15 years | ||
| Oil & Gas | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Impairment of finite-lived intangible assets | $ 500 | ||
| Field and Union Construction Turnaround | Oil & Gas | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Impairment of finite-lived intangible assets | 300 | ||
| Fabrication Services | Oil & Gas | |||
| Restructuring Cost and Reserve [Line Items] | |||
| Impairment of finite-lived intangible assets | $ 200 | ||