ASSETS HELD FOR SALE ASSETS HELD FOR SALE - Schedule for assets held for sale (Details) $ in Thousands	1 Months Ended
	Nov. 30, 2018 building	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Number Of Buildings Held For Sale | building	2
Assets held for sale		$ 21,328	$ 0
Assets Held-For-Sale, Not Part Of Disposal Group, Property, Plant, And Equipment, Gross		22,063
Assets Held-For-Sale, Not Part Of Disposal Group, Property, Plant, And Equipment, Accumulated Depreciation, Depletion And Amortization		(1,278)
Assets Held-For-Sale, Not Part Of Disposal Group, Property, Plant, And Equipment, Net		20,785
Assets Held-For-Sale, Not Part Of Disposal Group, Finite-Lived Intangible Assets, Gross		961
Accumulated Amortization		(38,941)	(15,977)
Assets Held-For-Sale, Not Part Of Disposal Group, Finite-Lived Intangible Assets, Net		493
Land
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		5,818
Building
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		14,984
Site improvements
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		950
Computer equipment and capitalized software
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		166
Furniture and other equipment
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		145
Tenant leases
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		961
Accumulated Amortization		$ (468)	$ (504)