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Unearned Revenue/ Accrued Revenue
12 Months Ended
Dec. 31, 2016
Notes To Consolidated Financial Statements  
Unearned Revenue/Accrued Revenue

18. Unearned Revenue /Accrued Revenue

Unearned Revenue represents cash received in advance of it being earned, whereas Accrued Revenue represents revenue earned prior to cash being received. Revenue is recognized as earned on a straight-line basis at their average rates when charter agreements provide for varying annual charter rates over their term. Total Unearned Revenue /Accrued Revenue during the periods presented is as follows:

   December 31,
   2015 2016
 Unearned Revenue       
  Cash received in advance of service provided – Current liability  $1,956 $2,029
  Deferred revenue resulting from varying charter rates      
  Current liability    -  11
 Total Unearned Revenue  $1,956 $2,040
        
 Accrued Revenue      
  Resulting from revenue earned prior to cash being received – Current asset $ 87 $ 166
  Resulting from varying charter rates –Non Current asset    918   929
 Total Accrued Revenue  $ 1,005 $ 1,095