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Transactions with Norfolk Southern Railway Company (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended 37 Months Ended
Mar. 01, 2019
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2022
Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Total Assets   $ 7,360,095       $ 7,360,095 $ 7,312,034
Deferred income   74,951       74,951 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   814 $ 3,700        
Deferred income   $ 963       963 $ 1,800
Contract with customer, liability, revenue recognized           $ 2,400  
Promenade Central              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Total 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