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Note 15 - Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Fair Value, Measurement Inputs, Disclosure [Text Block]
(
15
)
Fair Value of Financial Instruments
 
Cash, accounts receivable, accounts payable and accrued liabilities are reflected in the consolidated financial statements at their carrying amount which approximates fair value because of the short-term maturity of those instruments. The carrying amount of debt outstanding at
December
 
31,
 
2016
approximates fair value, and is based upon a market approach (Level
2).