FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Details 2) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Cash and cash equivalents	$ 66,901	$ 58,294
Restricted cash	3,724	5,752
Investment in equity securities	40,093	36,181
Long-term receivable (Note 3)	2,333	2,221
Level 1 \| Fair Value, Measurements, Recurring
Assets:
Cash and cash equivalents	66,901	58,294
Restricted cash	3,724	5,752
Investment in equity securities	40,093	36,181
Long-term receivable (Note 3)	0	0
Level 2 \| Fair Value, Measurements, Recurring
Assets:
Cash and cash equivalents	0	0
Restricted cash	0	0
Investment in equity securities	0	0
Long-term receivable (Note 3)	0	0
Level 3 \| Fair Value, Measurements, Recurring
Assets:
Cash and cash equivalents	0	0
Restricted cash	0	0
Investment in equity securities	0	0
Long-term receivable (Note 3)	2,333	2,221
Senior secured term loan \| Level 1 \| Fair Value, Measurements, Recurring
Liabilities:
Senior secured term loan	0	0
Senior secured term loan \| Level 2 \| Fair Value, Measurements, Recurring
Liabilities:
Senior secured term loan	282,977	330,351
Senior secured term loan \| Level 3 \| Fair Value, Measurements, Recurring
Liabilities:
Senior secured term loan	$ 0	$ 0

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Amount 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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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.

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. 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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