SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - Non-Cash Investing and Financing Activities (Details) - USD ($) $ in Thousands		12 Months Ended
Feb. 29, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property acquired under capital lease		$ 5,302
Note received as consideration in disposal of discontinued operations				$ 1,511
Issuance of common stock - Furmanite acquisition				209,529
Accrued capital expenditures		$ 1,400	$ 2,600	$ 2,300
Furmanite
Issuance of common stock - Furmanite acquisition	$ 209,529

Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586

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