FAIR VALUE (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amounts included in [Abstract]
Restricted cash	$ 9,100	$ 9,100
Recurring Basis
Assets [Abstract]
Money Market Funds - Fidelity, US	0	0
Interest bearing deposits - various banks	25,246	23,695
Amounts included in [Abstract]
Cash and cash equivalents	18,173	16,651
Restricted cash	742	741
Long-term restricted cash	6,331	6,303
Total	25,246	23,695
Recurring Basis \| Level 1
Assets [Abstract]
Money Market Funds - Fidelity, US	0	0
Interest bearing deposits - various banks	25,246	23,695
Amounts included in [Abstract]
Cash and cash equivalents	18,173	16,651
Restricted cash	742	741
Long-term restricted cash	6,331	6,303
Total	25,246	23,695
Recurring Basis \| Level 2
Assets [Abstract]
Money Market Funds - Fidelity, US	0	0
Interest bearing deposits - various banks	0	0
Amounts included in [Abstract]
Cash and cash equivalents	0	0
Restricted cash	0	0
Long-term restricted cash	0	0
Total	0	0
Recurring Basis \| Level 3
Assets [Abstract]
Money Market Funds - Fidelity, US	0	0
Interest bearing deposits - various banks	0	0
Amounts included in [Abstract]
Cash and cash equivalents	0	0
Restricted cash	0	0
Long-term restricted cash	0	0
Total	$ 0	$ 0

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The carrying amounts of noncurrent cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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No definition available.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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