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Note 12 - Fair Value of Financial Instruments
6 Months Ended
Jun. 30, 2013
Fair Value Disclosures [Abstract]  
Fair Value Disclosures [Text Block]
12.  
FAIR VALUE OF FINANCIAL INSTRUMENTS

FASB’s guidance for the disclosure regarding fair value of financial instruments requires disclosure of an estimate of the fair value of certain financial instruments.  The fair value of financial instruments pursuant to FASB’s guidance for the disclosure regarding fair value of financial instruments approximated their carrying values at June 30, 2013 and December 31, 2012.  The fair value of cash, trade accounts receivable, trade accounts payable, accrued liabilities, and our revolving credit facility approximates carrying value due to the short-term nature of these instruments.