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GOODWILL AND OTHER INTANGIBLE ASSETS (Rollforward of Goodwill) (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2017 USD ($)
Goodwill [Roll Forward] |
Balance at beginning of year | $ 465,154
Increase from current period acquisitions | 4,916
Measurement period adjustments from prior period acquisitions | 2,186
Decrease from disposition of business | (1,300)
Foreign currency translation and other | 1,863
Balance at end of year | 472,819
Technical Services |
Goodwill [Roll Forward] |
Balance at beginning of year | 61,116
Balance at end of year | 59,973
Industrial and Field Services |
Goodwill [Roll Forward] |
Balance at beginning of year | 107,968
Balance at end of year | 108,583
Safety-Kleen |
Goodwill [Roll Forward] |
Balance at beginning of year | 296,070
Balance at end of year | 304,263
Oil, Gas and Lodging Services |
Goodwill [Roll Forward] |
Balance at beginning of year | 0
Balance at end of year | 0
Operating Segments | Technical Services |
Goodwill [Roll Forward] |
Balance at beginning of year | 61,116
Increase from current period acquisitions | 0
Measurement period adjustments from prior period acquisitions | 0
Decrease from disposition of business | (1,300)
Foreign currency translation and other | 157
Balance at end of year | 59,973
Operating Segments | Industrial and Field Services |
Goodwill [Roll Forward] |
Balance at beginning of year | 107,968
Increase from current period acquisitions | 0
Measurement period adjustments from prior period acquisitions | 0
Decrease from disposition of business | 0
Foreign currency translation and other | 615
Balance at end of year | 108,583
Operating Segments | Safety-Kleen |
Goodwill [Roll Forward] |
Balance at beginning of year | 296,070
Increase from current period acquisitions | 4,916
Measurement period adjustments from prior period acquisitions | 2,186
Decrease from disposition of business | 0
Foreign currency translation and other | 1,091
Balance at end of year | 304,263
Operating Segments | Oil, Gas and Lodging Services |
Goodwill [Roll Forward] |
Balance at beginning of year | 0
Increase from current period acquisitions | 0
Measurement period adjustments from prior period acquisitions | 0
Decrease from disposition of business |
Foreign currency translation and other | 0
Balance at end of year | $ 0

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