Note 6 - Common and Preferred Stock and Earnings (Loss) per Share (Details) - Activity in the Company’s Outstanding Warrants (Warrant [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Warrant [Member]
Class of Warrant or Right [Line Items]
Outstanding	6,408,452	7,008,452	7,290,521
Outstanding weighted average exercise price (in Dollars per share)	$ 5.00	$ 5.00	$ 4.90
Warrants exercised	(600,000)	(400,000)
Warrants exercised weighted average exercise price (in Dollars per share)	$ 5.00	$ 5.00
Warrants cancelled in 2012		(6,541,849)
Warrants cancelled in 2012 (in Dollars per share)		$ 4.89
Warrants issued in 2012		6,659,780
Warrants issued in 2012 (in Dollars per share)		$ 5.00