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Note 8 - Shareholders' Equity (Detail) - Options Outstanding
 12 Months Ended
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2012
$0.48 - $0.71 [Member]
Minimum [Member]
USD ($)
Dec. 31, 2012
$0.48 - $0.71 [Member]
Maximum [Member]
AFN
Dec. 31, 2012
$0.48 - $0.71 [Member]
USD ($)
Dec. 31, 2012
$0.79 - $1.05 [Member]
Minimum [Member]
USD ($)
Dec. 31, 2012
$0.79 - $1.05 [Member]
Maximum [Member]
AFN
Dec. 31, 2012
$0.79 - $1.05 [Member]
USD ($)
Dec. 31, 2012
$1.10 - $1.66 [Member]
Minimum [Member]
USD ($)
Dec. 31, 2012
$1.10 - $1.66 [Member]
Maximum [Member]
AFN
Dec. 31, 2012
$1.10 - $1.66 [Member]
USD ($)
Dec. 31, 2012
$1.69 - $1.79 [Member]
Minimum [Member]
USD ($)
Dec. 31, 2012
$1.69 - $1.79 [Member]
Maximum [Member]
AFN
Dec. 31, 2012
$1.69 - $1.79 [Member]
USD ($)
Dec. 31, 2012
Maximum [Member]
Exercise Price - Minimum     $ 0.48     $ 0.79     $ 1.10     $ 1.69      
Exercise Price - Maximum (in Afghanis per share)       0.71     1.05     1.66     1.79    
Options outstanding as of December 31, 2012 (in Shares) 832,763 792,763     60,763     205,000     487,000     80,000  
Weighted average remaining contractual term 6 years 29 days 6 years 321 days     8 years 21 days     3 years 94 days     6 years 302 days     7 years 69 days 10 years
Weighted Average Exercise Price $ 1.30 $ 1.33     $ 0.69     $ 0.94     $ 1.45     $ 1.75  
Options exercisable as of December 31, 2012 (in Shares) 550,513,000       20,763,000     205,000,000     279,750,000     45,000,000  
Weighted average exercise price of options exercisable $ 1.24       $ 0.70     $ 0.94     $ 1.39     $ 1.77