Note 2 - Notes Payable And Long-Term Debt (Details) (USD $)					0 Months Ended	9 Months Ended	0 Months Ended	1 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Jul. 31, 2007 Building [Member] Credit Agreement with JPMorgan Chase Bank, N.A. [Member] sqft	Jul. 31, 2007 Land [Member] Credit Agreement with JPMorgan Chase Bank, N.A. [Member] acre	Jul. 12, 2012 London Interbank Offered Rate (LIBOR) [Member] Line of Credit Note with JPMorgan Chase Bank, N.A.[Member]	Sep. 30, 2013 London Interbank Offered Rate (LIBOR) [Member] Line of Credit Note with JPMorgan Chase Bank, N.A.[Member]	Apr. 30, 2008 Term Note [Member] Credit Agreement with JPMorgan Chase Bank, N.A. [Member]	Jul. 31, 2007 Credit Agreement with JPMorgan Chase Bank, N.A. [Member]	Sep. 30, 2013 Line of Credit Note with JPMorgan Chase Bank, N.A.[Member]	Jul. 12, 2012 Line of Credit Note with JPMorgan Chase Bank, N.A.[Member]
Note 2 - Notes Payable And Long-Term Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity								$ 5,500,000		$ 4,000,000
Area of Real Estate Property (in Square Feet)			191,000	30
Area of Real Estate Property (in Acres)			191,000	30
Proceeds from Bank Debt								4,050,000
Debt Instrument, Term							10 years
Debt Instrument Amortization Period							20 years
Debt Instrument, Interest Rate, Stated Percentage	7.10%	7.10%					7.10%
Debt Instrument, Basis Spread on Variable Rate					2.00%	2.25%
Line of Credit Facility, Remaining Borrowing Capacity									$ 4,000,000