Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date.

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Area of land subject to a ground lease.

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Description of terms and conditions of option to extend operating sublease.

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Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.

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Imputed interest rate on capital lease.

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A description of Changes in lease rent payments for the different periods of lease.

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CAPITAL LEASES AND OTHER OBLIGATIONS (Details Textual) $ in Thousands	1 Months Ended	6 Months Ended
	Oct. 20, 2017 USD ($) a	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Cost of assets under capital lease		$ 461	$ 461
Accumulated depreciation		411	379
Land Subject to Ground Leases \| a	41,715
Tenant Improvements	$ 200
Lessee Operating Sublease Rent Description	first year of the sublease, the rent per square foot is $7.50, increasing to $19.75 during the second year of the sublease and each year thereafter for the initial term increasing by an additional $1 per square foot.
Lessee, Operating Sublease, Option to Extend	June 30, 2025
Deferred Rent Credit, Noncurrent		$ 443	$ 0
Maximum
Debt Instrument [Line Items]
Imputed interest rate on lease		10.00%
Minimum
Debt Instrument [Line Items]
Imputed interest rate on lease		2.00%