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Acquisition - Additional information (Details) - CSI Electrical Contractors, Inc [Member] $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($)
Business Acquisition [Line Items] |
Preliminary estimated net asset adjustments | $ 1.0
Total consideration, net of net asset adjustments | 80.7
Margin Guarantee [Member] |
Business Acquisition [Line Items] |
Change in contingent consideration | 1.0
Certain Performance Targets and Continued Employment of Key Executives [Member] |
Business Acquisition [Line Items] |
Change in contingent consideration | $ 0.4

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