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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2019
Segment Information |
Summary of information about reportable segments | Our activities are within the mechanical services industry and the electrical services industry, which represent our two reportable segments. Each of our 36 operating locations represents an operating segment, and these segments have been aggregated into two reportable segments, as the operating locations meet all of the aggregation criteria. The following table presents information about our reportable segments (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, 2019
​ |  | Mechanical Services |  | Electrical Services |  | Corporate & Eliminations |  | Consolidated
Revenue | ​ | $ | 553,031 | ​ | $ | 97,271 | ​ | $ | — | ​ | $ | 650,302
Gross Profit | ​ | $ | 110,279 | ​ | $ | 9,737 | ​ | $ | — | ​ | $ | 120,016
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, 2018
​ |  | Mechanical Services |  | Electrical Services |  | Corporate & Eliminations |  | Consolidated
Revenue | ​ | $ | 535,043 | ​ | $ | — | ​ | $ | — | ​ | $ | 535,043
Gross Profit | ​ | $ | 111,183 | ​ | $ | — | ​ | $ | — | ​ | $ | 111,183
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30, 2019
​ |  | Mechanical Services |  | Electrical Services |  | Corporate & Eliminations |  | Consolidated
Revenue | ​ | $ | 1,087,616 | ​ | $ | 101,159 | ​ | $ | — | ​ | $ | 1,188,775
Gross Profit | ​ | $ | 216,131 | ​ | $ | 10,550 | ​ | $ | — | ​ | $ | 226,681
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30, 2018
​ |  | Mechanical Services |  | Electrical Services |  | Corporate & Eliminations |  | Consolidated
Revenue | ​ | $ | 999,984 | ​ | $ | — | ​ | $ | — | ​ | $ | 999,984
Gross Profit | ​ | $ | 200,236 | ​ | $ | — | ​ | $ | — | ​ | $ | 200,236
​

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599 + Details
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