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ACQUISITIONS - Narrative (Details) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2019 store | Feb. 28, 2018 USD ($) | Dec. 31, 2017 USD ($) | Mar. 31, 2017 store | Jan. 31, 2017 USD ($) store | Dec. 31, 2018 USD ($) sale_leaseback | Dec. 31, 2016 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |
Assets recorded as a result of transfer of joint venture interest |  |  | $ 5,704,808,000 |  |  | $ 5,340,853,000 | $ 6,104,640,000
Mortgage note payable recorded as a result of transfer of joint venture interest |  |  | $ 4,230,845,000 |  |  | 4,043,180,000 |
Capitalized transaction costs |  |  |  |  |  | $ 1,555,488,000 |
Number of sale leasebacks | sale_leaseback |  |  |  |  |  | 5 |
Subsequent Event |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of stores closed | store | 3 |  |  |  |  |  |
Number of stores remaining open | store | 1 |  |  |  |  |  |
Westmoreland Mall - Bon-Ton Location |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payments to acquire real estate |  | $ 3,250,000 |  |  |  |  |
Sears Department Stores |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of locations purchased | store |  |  |  |  | 5 |  |
Sears Auto Centers |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of locations purchased | store |  |  |  |  | 2 |  |
Sears Stores |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Assets recorded as a result of transfer of joint venture interest |  |  |  |  | $ 73,121,000 |  |
Payments to acquire real estate |  |  |  |  | 72,765,000 |  |
Capitalized transaction costs |  |  |  |  | $ 265,000 |  |
Lease term |  |  |  |  | 10 years |  |
Annual rent payment |  |  |  |  | $ 5,075,000 |  |
Decrease in rent for third through tenth years of leases |  |  |  |  | (0.25%) |  |
Required notice period for cancellation of lease, lessor |  |  |  |  | 6 months |  |
Minimum period for cancellation of lease, lessee |  |  |  |  | 6 months |  |
Maximum period for cancellation of lease, lessee |  |  |  |  | 4 years |  |
Minimum period of lease before termination |  |  |  |  | 2 years |  |
Macy's Stores |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Assets recorded as a result of transfer of joint venture interest |  |  |  |  | $ 7,556,000 |  |
Number of locations purchased | store |  |  |  |  | 4 |  |
Payments to acquire real estate |  |  |  |  | $ 7,034,000 |  |
Capitalized transaction costs |  |  |  |  | 34,000 |  |
Number of stores closed | store |  |  |  | 3 |  |  |
Annual maintenance charge |  |  |  |  | $ 19,000 |  |
JC Gulf Coast LLC |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Ownership interest in joint venture (as a percent) |  |  | 50.00% |  |  |  |
Cash consideration to purchase additional interest in joint venture |  |  | $ 0 |  |  |  |
Assets recorded as a result of transfer of joint venture interest |  |  | 2,818,000 |  |  |  |
Mortgage note payable recorded as a result of transfer of joint venture interest |  |  | $ 4,118,000 |  |  |  |

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