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Financial Instruments
6 Months Ended
Jun. 30, 2015
Financial Instruments [Abstract]  
Financial Instruments

10.       Financial Instruments

 

The carrying values of temporary cash investments, accounts receivable and accounts payable approximate their fair value due to the short-term nature of these financial instruments. The fair value of long-term loans and restricted cash balances, bearing interest at variable interest rates, approximate their recorded values as at June 30, 2015 and as of December 31, 2014.