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Note 20 - Financial Instruments - Estimated of Fair Values for Other Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Other receivables $ 10,203 $ 3,922
Other receivables, fair value 10,203 3,922
Revolving credit facility 262,498 260,947
Long-term debt, fair value $ 262,498 $ 260,947