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SUBSEQUENT EVENT (Details Textual) - CSG Systems Inc [Member] - Subsequent Event [Member]	1 Months Ended
	Oct. 20, 2017 USD ($) a
Land Subject to Ground Leases | a	42,480
Lessee, Operating Sublease, Option to Extend	June 30, 2025
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.
Tenant Improvements | $	$ 219,000

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Area of land subject to a ground lease.

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(f))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

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

+ References

No definition available.

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