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FINANCIAL INSTRUMENTS AND OTHER FAIR VALUE DISCLOSURES
12 Months Ended
Dec. 31, 2013
FINANCIAL INSTRUMENTS AND OTHER FAIR VALUE DISCLOSURES [Abstract]  
FINANCIAL INSTRUMENTS AND OTHER FAIR VALUE DISCLOSURES
18.      FINANCIAL INSTRUMENTS AND OTHER FAIR VALUE DISCLOSURES
The Company did not hold any material derivative instruments during 2012 and 2011, or as of December 31, 2012. In 2013 the Company received warrants as compensation for its contribution in coordinating the establishment of NAO. The warrants hold no material value, and have low associated risk. For further background and details related to the warrants please see Note 10.
The majority of NAT and its subsidiaries' transactions, assets and liabilities are denominated in United States dollars, the functional currency of the Company. There is no significant risk that currency fluctuations will have a negative effect on the value of the Company's cash flows.
The following methods and assumptions were used to estimate the fair value of each class of financial instruments and other financial assets.
-
The carrying value of cash and cash equivalents and marketable securities, is a reasonable estimate of fair value.
-
The estimated fair value for the working capital, cooperative arrangements is consider to be equal to the carrying values since it is not possible to estimate the time or period of repayment, and the effect of this discounting the outstanding balance is not expected to be material as compared to carrying value.
-
The estimated fair value for the long-term debt is considered to be equal to the carrying values since it bears variable interest rates.
-
The estimated fair value of the warrants in NAO was calculated based on a Black-Scholes model using comparative market data for other companies in the PSV segment to estimate volatility, and by assigning an estimated probability for achieving the exercise levels presented in Note 10.
The Company categorizes its fair value estimates using a fair value hierarchy based on the inputs used to measure fair value for those assets that are recorded on the balance sheet at fair value. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value as follows:
Level 1.                          Observable inputs such as quoted prices in active markets.
Level 2.Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and
Level 3.Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

The carrying value and estimated fair value of the Company`s financial instruments at December 31, 2013 and 2012 are as follows:
 
All figures in USD '000
 
Fair Value Hierarchy
Level
  
2013
Fair
Value
  
2013
 Carrying
Value
  
2012
 Fair
 Value
  
2012
Carrying
Value
 
Cash and Cash Equivalents
  
1
   
65,675
   
65,675
   
55,511
   
55,511
 
Marketable Securities
  
1
   
-
   
-
   
549
   
549
 
Warrants in NAO
  
3
   
915
   
915
   
-
   
-
 
Working capital, Related Party
      
-
   
-
   
36,987
   
36,987
 
Credit Facility
      
(250,000
)
  
(250,000
)
  
(250,000
)
  
(250,000
)
 
The valuation of vessels measured at fair value on a non-recurring basis as of the valuation date:
In accordance with the provisions of relevant guidance, a long-lived asset held and used with a carrying amount of $41.4 million was written down to its fair value of $29.4 million as determined based on estimated discounted operating cashflow, using the income approach, resulting in an impairment charge of $12.0 million, which was included in the statement of operations for December 31, 2012. The input factors to the discounted cash flow model are similar to those used for the undiscounted cash flow when testing for impairment (see Note 2) and are significantly based on unobservable inputs (Level 3) assessed from the perspective of a willing market participant.