Fair Value of Financial Instruments (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
FAIR VALUE OF FINANCIAL INSTRUMENTS [ABSTRACT]
Cash and cash equivalents - Book Value	$ 58,590	$ 24,047
Cash and cash equivalents - Fair Value	58,590	24,047
Restricted cash - Book Value	2,865	5,886
Restricted cash - Fair Value	2,865	5,886
Amounts due from related parties, short-term - Book Value	28,562	10,545
Amounts due from related parties, short-term - Fair Value	28,562	10,545
Loans receivable from affiliates - Book Value	27,657	11,706
Loans receivable from affiliates - Fair Value	27,657	11,706
Amounts due from related parties, long-term - Book Value	28,880	34,891
Amounts due from related parties, long-term - Fair Value	28,880	34,891
Notes receivable, net of current portion - Book Value	11,629	15,897
Notes receivable, net of current portion - Fair Value	11,629	15,897
Note receivable from affiliates - Book Value	4,525	4,253
Note receivable from affiliates - Fair Value	4,525	4,253
Term Loan B facility, net - Book Value	(408,662)	(425,144)
Term Loan B facility, net - Fair Value	(414,352)	(441,471)
Other long-term borrowings, net - Book Value	(98,823)	(68,319)
Other long-term borrowings, net - Fair Value	$ (100,513)	$ (69,161)

Fair value as of the balance sheet date of receivables due from all related parties.

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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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