Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Intangible Assets, by category
Gross Carrying Amount	$ 517,059		$ 517,059		$ 412,657
Accumulated Amortization	73,377		73,377		113,575
Amortization expense for intangible assets	8,272	$ 5,668	22,542	$ 9,508
Estimated amortization expense for next 5 years
2020	31,200		31,200
2021	32,300		32,300
2022	31,600		31,600
2023	31,600		31,600
2024	31,100		31,100
Customer related
Intangible Assets, by category
Gross Carrying Amount	106,247		106,247		143,996
Accumulated Amortization	43,572		43,572		99,327
Permits
Intangible Assets, by category
Gross Carrying Amount	308,559		308,559		170,322
Accumulated Amortization	14,992		14,992		4,694
Patents
Intangible Assets, by category
Gross Carrying Amount	177		177		249
Accumulated Amortization	126		126		168
Technology related
Intangible Assets, by category
Gross Carrying Amount	37,992		37,992		36,467
Accumulated Amortization	8,187		8,187		5,635
Trade names
Intangible Assets, by category
Gross Carrying Amount	31,698		31,698		31,719
Accumulated Amortization	4,133		4,133		2,182
Air rights
Intangible Assets, by category
Gross Carrying Amount	26,139		26,139		26,139
Accumulated Amortization	827		827		411
Other
Intangible Assets, by category
Gross Carrying Amount	3,747		3,747		3,765
Accumulated Amortization	1,228		1,228		1,158
Noncompete Agreements
Intangible Assets, by category
Gross Carrying Amount	2,500		2,500		$ 0
Accumulated Amortization	$ 312		$ 312