SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Useful Life) (Details) |
12 Months Ended |
---|---|
Dec. 31, 2018 | |
Buildings | Minimum | |
Property, Plant and Equipment [Line Items] | |
Useful life | 25 years |
Buildings | Maximum | |
Property, Plant and Equipment [Line Items] | |
Useful life | 40 years |
Building improvements | Minimum | |
Property, Plant and Equipment [Line Items] | |
Useful life | 10 years |
Building improvements | Maximum | |
Property, Plant and Equipment [Line Items] | |
Useful life | 25 years |
Tenant improvements | |
Property, Plant and Equipment [Line Items] | |
Estimated useful lives | Shorter of lease term or expected useful life |
Tenant origination and absorption costs | |
Property, Plant and Equipment [Line Items] | |
Estimated useful lives | Remaining term of related leases, including below-market renewal periods |