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Note 15 - Fair Value Measurement
 9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Fair Value Disclosures [Text Block]
15.
Fair value measurement:
 
For financial assets and liabilities recorded in our financial statements at fair value we utilize a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into
three
broad levels. Level
1
inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level
2
inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level
3
inputs are unobservable inputs based on the Company's own assumptions used to measure assets and liabilities at fair value. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
 
The following table provides a summary of the fair values of the Company's derivative instrument assets and liabilities measured at fair value on a recurring basis at
September 30, 2018
(Dollar amounts in thousands of U.S. dollars
):
 
   
 
 
 Fair Value Measurement Using
 
  
Assets (Liabilities)
 
   
Level 1
   
Level 2
   
Level 3
   
at Fair value
 
                                 
Derivative instrument asset
   $
-
     $
-
     $
-
     $
-
  
                                 
Derivative instrument liability
   $
-
     $
(62
 )   $
-
     $
(62
 )
 
There were
no
derivative instrument assets or liabilities outstanding at
December 31, 2017.