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Cash and Cash Equivalents (Table) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH AND CASH EQUIVALENTS [Abstract]
Cash on hand and at banks	$ 79,103us-gaap_Cash	$ 35,079us-gaap_Cash
Short term deposits and highly liquid funds	20,392us-gaap_CashEquivalentsAtCarryingValue	267us-gaap_CashEquivalentsAtCarryingValue
Total cash and cash equivalents	$ 99,495	$ 35,346	$ 32,132	$ 48,078

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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