Note 3 - Long-Term Debt (Details) (USD $)	9 Months Ended									1 Months Ended				3 Months Ended
	Sep. 30, 2013	Jul. 31, 2013	Oct. 22, 2013 Subsequent Event [Member] Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Sep. 30, 2013 Amended Credit Agreement [Member] LIBOR [Member] U.S. [Member]	Sep. 30, 2013 Amended Credit Agreement [Member] LIBOR [Member]	Sep. 30, 2013 Amended Credit Agreement [Member] Term Loan [Member]	Sep. 30, 2013 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Sep. 30, 2013 Amended Credit Agreement [Member]	Jul. 31, 2013 Scenario, Forecast [Member] Effective July 1, 2014 [Member]	Jul. 31, 2013 Scenario, Forecast [Member]	Jul. 31, 2013 Per Month Through July 1, 2015 [Member]	Jul. 31, 2013 Per Month Through June 1, 2018 [Member]	Sep. 30, 2013 Senior Debt [Member]	Sep. 30, 2013 Interest Rate Swap [Member]
Note 3 - Long-Term Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 15,000,000
Debt Instrument, Face Amount						30,000,000
Debt Instrument, Interest Rate, Stated Percentage				1.20%	0.95%
Line of Credit Facility, Commitment Fee Percentage	0.10%
Permitted Investments in Subsidiaries			5,000,000				1,000,000
Derivative, Fixed Interest Rate									2.53%
Derivative, Notional Amount		14,250,000
Debt Instrument, Periodic Payment, Principal										3,250,000	187,500	250,000
Interest Rate Derivative Assets, at Fair Value														128,000
Increase (Decrease) in Derivative Assets														128,000
Other Tax Expense (Benefit)														40,000
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year								375,000
Long-term Debt, Maturities, Repayments of Principal in Year Two								1,875,000
Long-term Debt, Maturities, Repayments of Principal in Year Three								2,625,000
Long-term Debt, Maturities, Repayments of Principal in Year Four								3,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five								3,000,000
Long-term Debt, Maturities, Repayments of Principal after Year Five								15,875,000
Debt Issuance Cost	$ 68,000
Ratio of Maximum Funded Indebtedness to EBITDA	4.0												3.5
Fixed Charges Numerator	1.25