PROPERTY AND EQUIPMENT (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2018	Dec. 31, 2017
Depreciation, Total	$ 3,000,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	167,306,000	$ 164,720,000
Capital Lease [Member]
Depreciation, Total	23,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 778,000	$ 755,000

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant