Note 3 - Line of Credit (Details) (USD $)				1 Months Ended
	Mar. 31, 2014	Oct. 24, 2012	Oct. 23, 2012	Oct. 24, 2012 Reduced To [Member] Prime Rate [Member]	Oct. 24, 2012 Reduced From [Member] Prime Rate [Member]	Oct. 24, 2012 Eliminated [Member] Minimum [Member]	Apr. 29, 2011 Credit Agreement [Member]	Dec. 31, 2012 Credit Agreement Amendment [Member]	Dec. 31, 2012 Credit Agreement Amendment [Member]
Note 3 - Line of Credit (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 5,000,000	$ 1,500,000				$ 500,000
Line of Credit Facility, Increase In Borrowing Capacity								1,500,000
Line of Credit Facility, Amount Outstanding	0							500,000
Line of Credit Facility, Borrowing Base Percentage Of Collateral Modified To		75.00%							65.00%
Line of Credit Facility, Borrowing Base Percentage Of Collateral Modified From		65.00%						80.00%
Line of Credit Facility, Covenant Compliance Net Worth Increase To		22,000,000						21,250,000
Line of Credit Facility, Covenant Compliance Net Worth Increase From		$ 21,250,000						$ 20,000,000
Debt Instrument, Basis Spread on Variable Rate				1.00%	2.00%
Debt Instrument, Interest Rate, Stated Percentage						5.00%