Note 3 - Long-Term Debt (Details) (USD $)	6 Months Ended					6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Amended Credit Agreement [Member] LIBOR [Member] U.S. [Member]	Jun. 30, 2013 Amended Credit Agreement [Member] LIBOR [Member]	Jun. 30, 2013 Amended Credit Agreement [Member] Term Loan [Member]	Jun. 30, 2013 Amended Credit Agreement [Member] Revolving Credit Facility [Member]	Jun. 30, 2013 Amended Credit Agreement [Member]	Jun. 30, 2013 LIBOR [Member] U.S. [Member]	Jun. 25, 2010 LIBOR [Member]	Jun. 30, 2013 Senior Debt [Member]	Jun. 25, 2010 Revolving Credit Facility [Member]
Note 3 - Long-Term Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)					$ 15,000,000					$ 15,000,000
Debt Instrument, Interest Rate, Stated Percentage		1.20%	0.95%				1.15%	0.90%
Line of Credit Facility, Commitment Fee Percentage	0.15%					0.10%
Debt Instrument, Face Amount (in Dollars)				30,000,000
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year (in Dollars)						750,000
Long-term Debt, Maturities, Repayments of Principal in Year Two (in Dollars)						1,875,000
Long-term Debt, Maturities, Repayments of Principal in Year Three (in Dollars)						2,625,000
Long-term Debt, Maturities, Repayments of Principal in Year Four (in Dollars)						3,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five (in Dollars)						3,000,000
Long-term Debt, Maturities, Repayments of Principal after Year Five (in Dollars)						$ 18,750,000
Ratio of Maximum Funded Indebtedness to EBITDA	3.5								4.0
Fixed Charges Numerator	1.25