OTHER FINANCIAL INFORMATION (SELF INSURANCE LIABILITIES TABLE) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
OTHER FINANCIAL INFORMATION [ABSTRACT]
Employee health and dental insurance	$ 3,987	$ 5,312
Worker's compensation	1,802	1,631
Total self insurance liabilities	$ 5,789	$ 6,943

Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(15)(5))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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