Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Intangible Assets, by category
Gross Carrying Amount	$ 521,424		$ 521,424		$ 523,048
Accumulated Amortization	107,886		107,886		84,483
Amortization expense for intangible assets	8,115	$ 8,272	24,514	$ 22,542
Estimated amortization expense for next 5 years
2021	32,900		32,900
2022	32,400		32,400
2023	32,300		32,300
2024	31,800		31,800
2025	31,600		31,600
Customer related
Intangible Assets, by category
Gross Carrying Amount	108,226		108,226		109,378
Accumulated Amortization	53,757		53,757		48,057
Permits and rights
Intangible Assets, by category
Gross Carrying Amount	308,998		308,998		308,705
Accumulated Amortization	30,856		30,856		18,955
Patents
Intangible Assets, by category
Gross Carrying Amount	185		185		192
Accumulated Amortization	140		140		139
Technology related
Intangible Assets, by category
Gross Carrying Amount	39,604		39,604		40,274
Accumulated Amortization	12,363		12,363		9,654
Trade Names [Member]
Intangible Assets, by category
Gross Carrying Amount	31,876		31,876		31,949
Accumulated Amortization	6,797		6,797		4,834
Air Rights [Member]
Intangible Assets, by category
Gross Carrying Amount	26,139		26,139		26,139
Accumulated Amortization	1,561		1,561		1,044
Other
Intangible Assets, by category
Gross Carrying Amount	3,896		3,896		3,911
Accumulated Amortization	1,475		1,475		1,331
Non-compete agreement
Intangible Assets, by category
Gross Carrying Amount	2,500		2,500		2,500
Accumulated Amortization	$ 937		$ 937		$ 469