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Mortgage Debt (Tables)
12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Schedule of mortgage and unamortized mortage cost
   Mortgage   Unamortized   Interest 
   Balance   mortgage Costs   Expense 
             
December 31, 2020  $1,570,383   $71,777   $97,006 
December 31, 2019  $1,608,516   $87,509   $99,560 
December 31, 2018  $1,644,657   $103,241   $101,699 
December 31, 2017  $1,678,660   $118,974   $103,544 
Schedule of maturities of long-term debt
2021  $42,737 
2022  $45,386 
2023  $48,201 
2024  $51,189 
2025  $1,382,870 
Thereafter  $0