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Lease Information Lease Information - Lease Rental Income (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Fixed Contractual Lease Payments - Operating Leases $ 218,004 $ 244,666
Variable Lease Payments - Operating Leases 52,128 61,368
Bad Debt Reserve (13,259) (3,620)
Straight-Line Rent Adjustment 1,155 3,362
Straight-Line Rent Reserve for Uncollectibility (4,177) (1,153)
Amortization of In-Place Lease Liabilities, net 3,819 3,776
Total $ 257,670 $ 308,399