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Goodwill and Intangibles Assets - Additional Information (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]      
Impairment of goodwill   $ 4,359,000 $ 0
Amortization of intangibles   642,000 $ 1,272,000
Indefinite-lived Intangible Assets      
Finite-Lived Intangible Assets [Line Items]      
Percentage of fair value in excess of carrying value 58.00%    
Construction      
Finite-Lived Intangible Assets [Line Items]      
Impairment of goodwill   4,359,000  
Service      
Finite-Lived Intangible Assets [Line Items]      
Impairment of goodwill $ 0 $ 0  
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount 101.00%    
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible asset, useful life   1 year  
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Finite-lived intangible asset, useful life   15 years