Note 7 - Debt (Details) (USD $)	3 Months Ended		1 Months Ended		3 Months Ended		12 Months Ended	9 Months Ended	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Nov. 22, 2011 Term Loan [Member]	Sep. 30, 2014 Term Loan [Member]	Sep. 30, 2013 Originally Agreement [Member]	Mar. 31, 2013 Originally Agreement [Member]	Sep. 30, 2014 Originally Agreement [Member]	Sep. 30, 2014 New Amended Agreement [Member] Maximum [Member]	Dec. 31, 2013 New Amended Agreement [Member]	Sep. 30, 2014 London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2014 Maximum [Member]	Sep. 30, 2014 Minimum [Member]
Note 7 - Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	$ 23,000,000
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)	12,200,000
Debt Instrument, Basis Spread on Variable Rate										1.50%
Current Funded Debt to EBITDA Ratio					2.25	1.45	1.45	2.25	1.45
Annual Capital Expenditures (in Dollars)											15,000,000
Debt Service Coverage Rate												1.25
Minimum Consolidated Cash and Liquid Investments Pursuant to New Loan and Security Agreement (in Dollars)	10,000,000
Line of Credit Facility, Interest Rate During Period	2.00%	2.00%
Debt Instrument, Face Amount (in Dollars)			15,500,000
Debt Instrument, Term			10 years
Debt Instrument, Interest Rate, Stated Percentage			4.50%
Debt Instrument, Periodic Payment (in Dollars)			160,640
Loans Payable to Bank (in Dollars)				$ 11,800,000