Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Subsequent Events (Details Textual)

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Note 7 - Subsequent Events (Details Textual) - USD ($)
 3 Months Ended 6 Months Ended
Jul. 28, 2015
May. 12, 2015
May. 04, 2015
Feb. 27, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Subsequent Event [Member]                
Common Stock, Dividends, Per Share, Declared $ 0.04              
Stock Repurchase Program, Authorized Amount $ 15,000,000              
Treasury Stock, Value, Acquired, Cost Method $ 5,000,000              
Common Stock, Dividends, Per Share, Declared     $ 0.03 $ 0.02 $ 0.03 $ 0.005 $ 0.05 $ 0.01
Stock Repurchase Program, Authorized Amount     $ 5,000,000          
Treasury Stock, Value, Acquired, Cost Method   $ 5,000,000