Transactions with Norfolk Southern Railway Company (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
	Mar. 01, 2019	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets		$ 7,496,072				$ 7,496,072		$ 7,312,034
Deferred income		108,316				108,316		74,515
NS
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contract price that is expected to be recognized as revenue	$ 52,300
Revenue recognized		$ 1,000	$ 2,500			$ 3,200	$ 10,400
Deferred income								$ 1,800
Promenade Central
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets	92,300
Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property purchased				$ 6,500	$ 37,000
Site Preparation Work
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property purchased	4,000
NS | Promenade Central
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase of a building	$ 82,000
Lease term	3 years
Discount on service contract price	$ 10,300
Gain or loss on derecognition of non financial asset fair value	0
Consideration for the various services component	52,300
NS | Fees for development services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contract fees	5,000
NS | Fees for consulting services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contract fees	32,000
NS | Development agreement | Promenade Central
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration for various services contract	5,000
NS | Consulting agreement | Promenade Central
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration for various services contract	32,000
NS | Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of property	52,500
Gain from sale of property	5,000
NS | Land | Promenade Central
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration for various services contract	$ 5,000