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Note 9 - Stock-Based Compensation and Other Employee Benefit Plans (Details) - Stock Options Issued outside of the 2007 Equity Incentive Plan (USD $)
 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
$0.30 [Member]
Dec. 31, 2013
$0.18 [Member]
Dec. 31, 2013
$0.99 [Member]
Dec. 31, 2013
$0.55 [Member]
Dec. 31, 2013
$1.00 [Member]
Dec. 31, 2013
$0.40 [Member]
Dec. 31, 2013
.30 for Ten Years [Member]
Dec. 31, 2013
0.25 - 0.30 [Member]
Dec. 31, 2013
0.25 - 0.30 [Member]
Minimum [Member]
Dec. 31, 2013
0.25 - 0.30 [Member]
Maximum [Member]
Dec. 31, 2013
$0.18 - $1.00 [Member]
Dec. 31, 2013
$0.18 - $1.00 [Member]
Minimum [Member]
Dec. 31, 2013
$0.18 - $1.00 [Member]
Maximum [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2012
Minimum [Member]
Dec. 31, 2010
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Dec. 31, 2012
Maximum [Member]
Dec. 31, 2010
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]                                            
Options Outstanding (in Shares)       46,250 7,733,259 2,400,000 691,975 800,000 168,750 1,497,986 3,060,175     16,398,395                
Exercise Price       $ 0.30 $ 0.18 $ 0.99 $ 0.55 $ 1.00 $ 0.40 $ 0.30   $ 0.25 $ 0.30   $ 0.18 $ 1.00 $ 0.25 $ 0.25 $ 0.23 $ 1.89 $ 1.89 $ 1.89
Weighted Average Remaining Contractual Life       2 years 3 years 3 years 6 years 8 years 9 years 9 years 10 years     9 years                
Weighted Average Exercise Price $ 0.44 $ 0.44 $ 0.42 $ 0.30 $ 0.18 $ 0.99 $ 0.55 $ 1.00 $ 0.40 $ 0.30 $ 0.28     $ 0.39                
Options Exercisable (in Shares)       46,250 7,733,259 2,400,000 691,975 483,333 168,750 1,497,986 3,060,175     16,081,728                
Options Exercisable, Weighted Average Price       $ 0.30 $ 0.18 $ 0.99 $ 0.55 $ 1.00 $ 0.40 $ 0.30 $ 0.28     $ 0.37