SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - Schedule of Rollforward Goodwill (Details) $ in Thousands	9 Months Ended
Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
Balance at beginning of period	$ 256,654
Acquisitions	112,679
Foreign currency adjustments	1,393
Balance at end of period	370,726
Team Qualspec
Goodwill [Roll Forward]
Balance at beginning of period	207,497
Acquisitions	5,955
Foreign currency adjustments	746
Balance at end of period	214,198
Team Furmanite
Goodwill [Roll Forward]
Balance at beginning of period	19,874
Acquisitions	102,587
Foreign currency adjustments	255
Balance at end of period	122,716
Quest Integrity
Goodwill [Roll Forward]
Balance at beginning of period	29,283
Acquisitions	4,137
Foreign currency adjustments	392
Balance at end of period	$ 33,812

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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