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Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Total intangible assets    
Cost $ 381,940 $ 381,940
Accumulated Amortization (197,771) (183,805)
Accumulated Impairment Charge (113,067) (113,067)
Carrying Value 71,102 85,068
Trade Names    
Finite-Lived intangible assets    
Cost 69,250 69,250
Accumulated Amortization (25,326) (23,650)
Accumulated Impairment Charge (23,232) (23,232)
Carrying Value $ 20,692 $ 22,368
Weighted-Average Amortization Period 20 years 20 years
Customer relationships    
Finite-Lived intangible assets    
Cost $ 39,800 $ 39,800
Accumulated Amortization (23,155) (23,053)
Accumulated Impairment Charge (16,645) (16,645)
Carrying Value 0 $ 102
Weighted-Average Amortization Period   12 years
Construction contract backlog    
Finite-Lived intangible assets    
Cost 149,290 $ 149,290
Accumulated Amortization (149,290) (137,102)
Carrying Value 0 $ 12,188
Weighted-Average Amortization Period   3 years
Trade Names    
Indefinite-lived intangible assets    
Cost 117,600 $ 117,600
Accumulated Impairment Charge (67,190) (67,190)
Carrying Value 50,410 50,410
Contractor license    
Indefinite-lived intangible assets    
Cost 6,000 6,000
Accumulated Impairment Charge $ (6,000) $ (6,000)