REVENUES (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Property rentals	$ 74,546	$ 64,708	$ 144,268	$ 127,206
Total Revenue	101,970	89,501	201,023	215,565
Tenant expense reimbursements
Disaggregation of Revenue [Line Items]
Revenues	26,222	23,881	54,894	47,652
Management and development fees
Disaggregation of Revenue [Line Items]
Revenues	347	351	689	830
Income from acquired leasehold interest
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	39,215
Other income
Disaggregation of Revenue [Line Items]
Revenues	855	561	1,172	662
Transferred over Time \| Tenant expense reimbursements
Disaggregation of Revenue [Line Items]
Revenues	26,222	23,881	54,894	47,652
Transferred over Time \| Management and development fees
Disaggregation of Revenue [Line Items]
Revenues	347	351	689	830
Transferred over Time \| Income from acquired leasehold interest
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	39,215
Transferred over Time \| Other income
Disaggregation of Revenue [Line Items]
Revenues	$ 855	$ 561	$ 1,172	$ 662

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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