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Commitments and Contingencies Restructuring and Related Activities (Tables) | 3 Months Ended
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Mar. 31, 2015
Restructuring and Related Activities [Abstract] |
Schedule of Restructuring Reserve by Type of Cost [Table Text Block] | The changes in restructuring activity by reportable segments during the three months ended March 31, 2015 and March 31, 2014 were as follows (in thousands):
| United States electrical construction and facilities services segment |  | United States mechanical construction and facilities services segment |  | Corporate administration |  | Total
Balance at December 31, 2013 | $ | 30 |  |  | $ | 164 |  |  | $ | — |  |  | $ | 194 |
Charges | — |  |  | (75 | ) |  | 300 |  |  | 225 |
Payments | (6 | ) |  | (89 | ) |  | — |  |  | (95 | )
Balance at March 31, 2014 | $ | 24 |  |  | $ | — |  |  | $ | 300 |  |  | $ | 324 |
Balance at December 31, 2014 | $ | 255 |  |  | $ | 26 |  |  | $ | — |  |  | $ | 281 |
Charges | 2 |  |  | 6 |  |  | — |  |  | 8 |
Payments | (18 | ) |  | (32 | ) |  | — |  |  | (50 | )
Balance at March 31, 2015 | $ | 239 |  |  | $ | — |  |  | $ | — |  |  | $ | 239 |
Restructuring and Related Costs [Table Text Block] | A summary of restructuring expenses by reportable segments recognized for the three months ended March 31, 2015 was as follows (in thousands):
| United States electrical construction and facilities services segment |  | United States mechanical construction and facilities services segment |  | Corporate administration |  | Total
Severance | $ | — |  |  | $ | 6 |  |  | $ | — |  |  | $ | 6 |
Leased facilities | 2 |  |  | — |  |  | — |  |  | 2 |
Total charges | $ | 2 |  |  | $ | 6 |  |  | $ | — |  |  | $ | 8 |

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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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 + Details
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