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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Carrying Amount [Member] |  |
Long-term Financial Liabilities [Abstract] |  |
Long-term debt | $ 106,262 | $ 106,931
Estimated Fair Value [Member] |  |
Long-term Financial Liabilities [Abstract] |  |
Long-term debt | $ 106,132 | $ 110,524

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |