Note 7 - Long-Term Debt (Details) (USD $)	12 Months Ended										1 Months Ended				12 Months Ended
	Dec. 31, 2013	Jul. 31, 2013	Jun. 30, 2013 Amended Credit Agreement [Member] US [Member] LIBOR [Member]	Jun. 30, 2013 Amended Credit Agreement [Member] LIBOR [Member]	Jun. 30, 2013 Amended Credit Agreement [Member] Term Loan [Member]	Oct. 22, 2013 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Sep. 30, 2013 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Jun. 30, 2013 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Dec. 31, 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]	Dec. 31, 2013 Senior Debt [Member]	Dec. 31, 2013 Interest Rate Swap [Member]
Note 7 - 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%
Letters of Credit Outstanding, Amount	0
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															125,000
Increase (Decrease) in Derivative Assets															125,000
Other Tax Expense (Benefit)															40,000
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year									1,750,000
Long-term Debt, Maturities, Repayments of Principal in Year Two									2,625,000
Long-term Debt, Maturities, Repayments of Principal in Year Three									3,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Four									3,000,000
Long-term Debt, Maturities, Repayments of Principal in 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