Note 10 - Stock-Based Compensation Plans and Warrants (Details) (USD $)	0 Months Ended		1 Months Ended				12 Months Ended				24 Months Ended		72 Months Ended		12 Months Ended			0 Months Ended	6 Months Ended			3 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended			17 Months Ended	25 Months Ended		1 Months Ended		48 Months Ended
	Mar. 05, 2013	Jan. 09, 2013	Oct. 30, 2012	Oct. 31, 2012	Jun. 30, 2012	Nov. 30, 2011	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013		Jun. 30, 2011	Dec. 31, 2010	Dec. 31, 2013 Employee Stock Option [Member]	Dec. 31, 2012 Employee Stock Option [Member]	Dec. 31, 2011 Employee Stock Option [Member]	Jan. 10, 2011 Restricted Stock [Member]	Jun. 30, 2010 Restricted Stock [Member]	Dec. 31, 2013 Restricted Stock [Member]	Dec. 31, 2013 2003 Management Equity Incentive Plan [Member]	Dec. 31, 2013 Outside Director Compensation Plan [Member]	Dec. 31, 2013 Outside Director Compensation Plan [Member]	May 31, 2009 2007Management Equity Incentive Plan [Member]	Dec. 31, 2010 2007Management Equity Incentive Plan [Member]	Dec. 31, 2009 2007Management Equity Incentive Plan [Member]	Dec. 31, 2008 2007Management Equity Incentive Plan [Member]	May 31, 2009 2007Management Equity Incentive Plan [Member]	Jan. 31, 2010 2007Management Equity Incentive Plan [Member]	Dec. 31, 2013 2007Management Equity Incentive Plan [Member]	Nov. 30, 2013 2009 Equity Incentive Plan [Member]	Dec. 18, 2009 2009 Equity Incentive Plan [Member]	Dec. 31, 2013 2009 Equity Incentive Plan [Member]	Dec. 31, 2010 2009 Equity Incentive Plan [Member]	Dec. 31, 2013 Director [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]
Note 10 - Stock-Based Compensation Plans and Warrants (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number							842,500	[1]	862,500	862,500	842,500	[1]		727,500							315,000									10,000			527,500
Officers' Compensation (in Dollars)																						$ 7,500	$ 30,000
Allocated Share-based Compensation Expense (in Dollars)							100,000		99,000	1,130,000												5,000	20,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized																																850,000		850,000
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award																																ten
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																																24 months
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period						666,667																											537,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period																															10,000
Share Based Compensation Arrangement by Share Based Payment Award Options Outstanding and Unexercised Number							842,500				842,500
Share-based Compensation (in Dollars)		373,000					516,000		383,000	2,376,000					43,000	284,000	1,245,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period							0		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)										$ 7.28
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							0			135,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share)							$ 11.84		$ 11.92	$ 11.92	$ 11.84			$ 11.86																						$ 9.88	$ 13.95
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures					19,483		527,500											140,000	115,000					90,000	150,000	150,000	150,000	100,000	250,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant							25,235				25,235									595,000
Common Stock, Shares, Issued				250,000			16,152,756		15,438,961		16,152,756																								42,265
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued													92,265
Proceeds from Issuance of Private Placement (in Dollars)						6,000,000
Sale of Stock, Price Per Share (in Dollars per share)						$ 9
Base For Issuing Purchase Warrants						3
Warrant Issued						1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)				10		13
Proceeds from Lines of Credit (in Dollars)	$ 17,500,000		$ 5,000,000	$ 5,000,000
Class of Warrant or Right, Outstanding							472,222				472,222

[1] Exercise prices vary from $9.88 to $13.95, and expiration dates vary from May 2015 to December 2021.