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Note 12 - Stockholders' Equity (Detail) - Summary of activity related to restricted stock awards and deferred stock units awards for key employees: (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Restricted Stock [Member]
     
Balance   7,312 8,437
Balance (in Dollars per share)   $ 2.25 $ 0.92
Aggregate grant date fair value (in Dollars) $ 21,000    
Vesting service period of shares granted 1 year    
Number of shares / units vested during period 7,687 7,312  
Number of shares non-vested 22,321   7,312
Shares / units granted 22,321   8,062
Shares / units granted (in Dollars per share) $ 1.12   $ 2.25
Shares / units forfeited     (1,500)
Shares / units forfeited (in Dollars per share)     $ 1.49
Shares / units restriction lapses   (7,312) (7,687)
Shares / units restriction lapses (in Dollars per share)   $ 2.25 $ 0.94
Balance 22,321   7,312
Balance (in Dollars per share) $ 1.12   $ 2.25
Deferred Stock Unit Awards [Member]
     
Balance     12,314
Balance (in Dollars per share)     $ 12.70
Vesting service period of shares granted 12 - 36 months    
Number of shares / units vested during period 12,263    
Shares / units forfeited     (51)
Shares / units forfeited (in Dollars per share)     $ 12.70
Shares / units restriction lapses     (12,263)
Shares / units restriction lapses (in Dollars per share)     $ 12.70