Annual report pursuant to section 13 and 15(d)

Note 8 - Stockholders' Equity (Detail) - Summary of Stock Options

v2.4.0.6
Note 8 - Stockholders' Equity (Detail) - Summary of Stock Options (USD $)
12 Months Ended
Dec. 31, 2012
Options Outstanding - Number Outstanding (in Shares) 6,432,127
Options Outstanding - Weighted-Average Remaining Contractual Life 8 years 73 days
Options Outstanding - Weighted-Average Exercise Price $ 1.58
Options Exercisable - Number Exercisable (in Shares) 2,386,909
Options Exercisable - Weighted-Average Exercise Price $ 2.13
Range 1 [Member]
 
Range of Exercise Prices $ 0.88
Range of Exercise Prices $ 1.17
Options Outstanding - Number Outstanding (in Shares) 3,033,900
Options Outstanding - Weighted-Average Remaining Contractual Life 8 years 193 days
Options Outstanding - Weighted-Average Exercise Price $ 0.99
Options Exercisable - Number Exercisable (in Shares) 287,500
Options Exercisable - Weighted-Average Exercise Price $ 0.89
Range 2 [Member]
 
Range of Exercise Prices $ 1.63
Range of Exercise Prices $ 2.13
Options Outstanding - Number Outstanding (in Shares) 3,216,700
Options Outstanding - Weighted-Average Remaining Contractual Life 8 years 58 days
Options Outstanding - Weighted-Average Exercise Price $ 1.79
Options Exercisable - Number Exercisable (in Shares) 1,917,882
Options Exercisable - Weighted-Average Exercise Price $ 1.80
Range 3 [Member]
 
Range of Exercise Prices $ 3.20
Range of Exercise Prices $ 9.64
Options Outstanding - Number Outstanding (in Shares) 181,527
Options Outstanding - Weighted-Average Remaining Contractual Life 3 years 200 days
Options Outstanding - Weighted-Average Exercise Price $ 7.61
Options Exercisable - Number Exercisable (in Shares) 181,527
Options Exercisable - Weighted-Average Exercise Price $ 7.61