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Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable [Line Items]  
Number of Options Outstanding (in Shares) 2,861,893
Options Outstanding, Weighted Average Remaining Contactual Life 7 years 73 days
Options Outstanding, Weighted Average Exercise Price $ 1.53
Number of Options Exercisable (in Shares) 1,914,697
Options Exercisable, Weighted Average Exercise Price $ 2.08
$0.23 - $0.23 [Member]
 
Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable [Line Items]  
Range of Exercise Prices Lower Limit $ 0.23
Range of Exercise Prices Upper Limit $ 0.23
Number of Options Outstanding (in Shares) 855,000
Options Outstanding, Weighted Average Remaining Contactual Life 9 years 73 days
Options Outstanding, Weighted Average Exercise Price $ 0.23
Number of Options Exercisable (in Shares) 398,332
Options Exercisable, Weighted Average Exercise Price $ 0.23
$0.26 to $0.76 [Member]
 
Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable [Line Items]  
Range of Exercise Prices Lower Limit $ 0.26
Range of Exercise Prices Upper Limit $ 0.76
Number of Options Outstanding (in Shares) 772,394
Options Outstanding, Weighted Average Remaining Contactual Life 8 years 6 months
Options Outstanding, Weighted Average Exercise Price $ 0.52
Number of Options Exercisable (in Shares) 350,932
Options Exercisable, Weighted Average Exercise Price $ 0.54
$1.00 to $2.33 [Member]
 
Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable [Line Items]  
Range of Exercise Prices Lower Limit $ 1.00
Range of Exercise Prices Upper Limit $ 2.33
Number of Options Outstanding (in Shares) 882,499
Options Outstanding, Weighted Average Remaining Contactual Life 5 years 328 days
Options Outstanding, Weighted Average Exercise Price $ 1.37
Number of Options Exercisable (in Shares) 813,433
Options Exercisable, Weighted Average Exercise Price $ 1.39
$4.91 to $6.36 [Member]
 
Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable [Line Items]  
Range of Exercise Prices Lower Limit $ 4.91
Range of Exercise Prices Upper Limit $ 6.36
Number of Options Outstanding (in Shares) 160,000
Options Outstanding, Weighted Average Remaining Contactual Life 3 years 6 months
Options Outstanding, Weighted Average Exercise Price $ 6.03
Number of Options Exercisable (in Shares) 160,000
Options Exercisable, Weighted Average Exercise Price $ 6.03
$7.00 to $10.64 [Member]
 
Note 13 - Shareholders Equity (Details) - Options Outstanding and Exercisable [Line Items]  
Range of Exercise Prices Lower Limit $ 7.00
Range of Exercise Prices Upper Limit $ 10.64
Number of Options Outstanding (in Shares) 192,000
Options Outstanding, Weighted Average Remaining Contactual Life 1 year 328 days
Options Outstanding, Weighted Average Exercise Price $ 8.38
Number of Options Exercisable (in Shares) 192,000
Options Exercisable, Weighted Average Exercise Price $ 8.38