GOODWILL AND OTHER INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
---|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
|
Goodwill [Line Items] | |||||
Property, plant and equipment, net | $ 1,562,254 | $ 1,562,254 | $ 1,558,834 | ||
Goodwill impairment charge | 31,992 | $ 0 | 31,992 | $ 0 | |
Permits and other intangible, net | 534,621 | 534,621 | 530,080 | ||
Oil and Gas Field Services | |||||
Goodwill [Line Items] | |||||
Goodwill | 31,992 | 31,992 | |||
Property, plant and equipment, net | 185,312 | 185,312 | 215,574 | ||
Goodwill impairment charge | 0 | ||||
Permits and other intangible, net | 20,061 | 20,061 | $ 22,727 | ||
Permits | Oil and Gas Field Services | |||||
Goodwill [Line Items] | |||||
Permits and other intangible, net | 100 | 100 | |||
Customer and Supplier Relationships | Oil and Gas Field Services | |||||
Goodwill [Line Items] | |||||
Permits and other intangible, net | 10,700 | 10,700 | |||
Other intangible assets | Oil and Gas Field Services | |||||
Goodwill [Line Items] | |||||
Permits and other intangible, net | $ 9,300 | $ 9,300 |