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Commitments and Contingencies Restructuring and Related Activities (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The changes in restructuring activity by reportable segments during the three months ended March 31, 2018 and 2017 were as follows (in thousands):    

		United States electrical construction and facilities services segment				United States mechanical construction and facilities services segment				United States building services segment				Total
Balance at December 31, 2016		$	—			$	188			$	13			$	201
Charges		—				62				503				565
Payments		—				(110		)		(420		)		(530		)
Balance at March 31, 2017		$	—			$	140			$	96			$	236
Balance at December 31, 2017		$	452			$	—			$	40			$	492
Charges		—				—				90				90
Payments		(147		)		—				(120		)		(267		)
Balance at March 31, 2018		$	305			$	—			$	10			$	315

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- References

No definition available.

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- Definition

Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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