Note 7 - Stock-based Compensation (Details) - Summary of Restricted Shares (USD $)	12 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013 2007 Incentive Plan [Member]	Dec. 31, 2012 2007 Incentive Plan [Member]	Dec. 31, 2010 2007 Incentive Plan [Member]	Dec. 31, 2013 Directors Restricted Stock Plan [Member]	Dec. 31, 2012 Directors Restricted Stock Plan [Member]	Dec. 31, 2011 Directors Restricted Stock Plan [Member]
Note 7 - Stock-based Compensation (Details) - Summary of Restricted Shares [Line Items]
Number of Shares, Beginning of Period		0	0	0		10,000	33,000
Weighted- Average Grant Date Fair Value Per Share, Beginning of Period (in Dollars per share)		$ 0	$ 0	$ 0		$ 4.94	$ 5.74
Number of Shares, Granted	432,396	382,062	432,396		0	0	0
Weighted- Average Grant Date Fair Value Per Share, Granted (in Dollars per share)		$ 5.20	$ 1.65		$ 0	$ 0	$ 0
Number of Shares, Vested		(107,224)	(432,396)			(10,000)	(23,000)
Weighted- Average Grant Date Fair Value Per Share, Vested (in Dollars per share)		$ 7.16	$ 1.65			$ 4.94	$ 6.08
Number of Shares, End of Period		274,838	0	0			10,000
Weighted- Average Grant Date Fair Value Per Share, End of Period (in Dollars per share)		$ 4.43	$ 0	$ 0			$ 4.94