BUSINESS COMBINATIONS 2011 Acquisitions (Details)											0 Months Ended	12 Months Ended				12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Oil and Gas Field Services USD ($)	Dec. 31, 2012 Oil and Gas Field Services USD ($)	Dec. 31, 2013 Technical Services USD ($)	Dec. 31, 2012 Technical Services USD ($)	Dec. 31, 2013 Industrial Services USD ($)	Dec. 31, 2012 Industrial Services USD ($)	Dec. 28, 2012 Industrial Services USD ($)	Jun. 10, 2011 Peak Energy Services Ltd.'s ('Peak') USD ($)	Dec. 31, 2011 Peak Energy Services Ltd.'s ('Peak') USD ($)	Jun. 10, 2011 Peak Energy Services Ltd.'s ('Peak') CAD	Jun. 10, 2011 Peak Energy Services Ltd.'s ('Peak') Oil and Gas Field Services USD ($)	Jun. 10, 2011 Peak Energy Services Ltd.'s ('Peak') Industrial Services USD ($)	Dec. 31, 2011 2011 Acquisitions USD ($)	Dec. 31, 2012 2011 Acquisitions USD ($)	Dec. 31, 2012 2011 Acquisitions Oil and Gas Field Services USD ($)	Dec. 31, 2012 2011 Acquisitions Technical Services USD ($)	Dec. 31, 2012 2011 Acquisitions Industrial Services USD ($)
Business Acquisition [Line Items]
Outstanding common shares acquired (as a percent)	100.00%										100.00%
Percentage of outstanding common shares of acquiree already owned by company (as a percent)											3.15%
Total purchase price											$ 205,133,000		200,200,000
Exchange rate translation											0.976
Purchase price, cash assumed											162,600,000
Assumed debt											38,400,000					25,200,000
Fair value of common shares in acquiree											15,700,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value											4,100,000
Gain loss recognized in other income previously held as common shares											1,900,000
Summary of recognized assets acquired and liabilities assumed
Current assets											45,222,000						41,551,000
Property, plant and equipment											151,574,000						62,969,000
Customer relationships and other intangibles											12,337,000						23,371,000
Other assets											8,009,000						1,671,000
Current liabilities											(28,785,000)						(23,148,000)
Asset retirement obligations											(103,000)						(200,000)
Other liabilities											(11,341,000)						(2,419,000)
Total identifiable net assets											176,913,000						103,795,000
Goodwill	570,960,000	579,715,000	122,392,000	37,507,000	39,762,000	45,599,000	45,991,000	144,385,000	146,715,000	75,400,000	28,220,000			12,900,000	15,300,000		38,339,000	13,300,000	11,100,000	13,900,000
Total											205,133,000					142,100,000	142,134,000
Business Combination, Acquired Receivables, Fair Value											33,300,000						21,400,000
Customer receivables, gross amount due											34,700,000						22,100,000
Post-closing adjustments																4,500,000
Acquisition related costs												$ 700,000				$ 800,000