Note 7 - Debt (Details) (USD $)	1 Months Ended	6 Months Ended				6 Months Ended	0 Months Ended			1 Months Ended	6 Months Ended
	Nov. 22, 2011	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2013 London Interbank Offered Rate (LIBOR) [Member]	May 09, 2013 Fourth Quarter 2013 and First Quarter 2014 [Member] Originally Agreement [Member]	May 09, 2013 Fourth Quarter 2013 and First Quarter 2014 [Member] Amended Agreement [Member]	May 09, 2013 Thereafter [Member] Amended Agreement [Member]	Dec. 23, 2013 Thereafter [Member] New Amended Agreement [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Minimum [Member]
Note 7 - Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)		$ 23,000,000
Debt Instrument, Basis Spread on Variable Rate						1.50%
Current Funded Debt to EBITDA Ratio							1.45	2.25	1.45	2.25	2.25
Annual Capital Expenditures (in Dollars)											15,000,000
Debt Service Coverage Rate												1.25
Cash and Cash Equivalents, at Carrying Value (in Dollars)		16,557,000	14,577,000	19,755,000	17,502,000							10,000,000
Line of Credit Facility, Interest Rate During Period		2.01%	1.78%
Debt Instrument, Face Amount (in Dollars)	15,500,000
Term Loan Number of Years	10 years
Debt Instrument, Interest Rate, Stated Percentage	4.50%
Line of Credit Facility, Periodic Payment (in Dollars)	160,640
Line of Credit Facility, Amount Outstanding (in Dollars)		$ 12,800,000