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Note 2 - Stock-based Compensation (Details) (USD $)
0 Months Ended 3 Months Ended 9 Months Ended
Jan. 01, 2014
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Issuance of Stock for Cash [Member]
Sep. 30, 2014
Issue of Stock for Noncash Consideration [Member]
Jan. 01, 2014
January 1, 2014 [Member]
Jan. 01, 2014
April 1, 2014 [Member]
Jul. 01, 2014
July 1, 2014 [Member]
Jan. 01, 2014
July 1, 2014 [Member]
Jul. 01, 2014
October 1, 2014 [Member]
Jan. 01, 2014
October 1, 2014 [Member]
Note 2 - Stock-based Compensation (Details) [Line Items]                          
Allocated Share-based Compensation Expense (in Dollars)   $ 145,200   $ 350,800                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 36,292 6,772 0 43,064                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number               9,075 9,073 3,386 9,073 3,386 9,071
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period   0 0 130,000   50,000 80,000            
Proceeds from Stock Options Exercised (in Dollars)       447,751   447,751              
Treasury Stock, Shares, Acquired             57,381            
Treasury Stock, Value, Acquired, Cost Method (in Dollars)             727,072            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)       $ 513,000 $ 26,300