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Revenue Recognition (Details 3) $ in Thousands | Sep. 30, 2018 USD ($)
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Total, Remaining Performance Obligation | $ 1,018,621
Amount estimated to not be recognized within 12 months | 196,234
T&D [Member] |
Total, Remaining Performance Obligation | 403,046
Amount estimated to not be recognized within 12 months | 63,683
C&I [Member] |
Total, Remaining Performance Obligation | 615,575
Amount estimated to not be recognized within 12 months | $ 132,551

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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
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