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Real Property Interests - Schedule of Amortization Expense To Be Recognized for Each of Succeeding Five Years (Details) - Cell Site Leasehold Interests
$ in Thousands
Dec. 31, 2020
USD ($)
Finite Lived Intangible Assets [Line Items]  
2021 $ 44,217
2022 44,076
2023 44,006
2024 44,006
2025 43,986
Thereafter 631,238
Total $ 851,529