Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stockholders' Equity (Details Textual)

v3.2.0.727
Note 4 - Stockholders' Equity (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
May. 13, 2015
May. 12, 2015
May. 04, 2015
Feb. 27, 2015
Feb. 19, 2015
Apr. 30, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Jan. 22, 2015
George K. Broady [Member]                      
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners                     5.00%
Treasury Stock, Shares, Acquired         91,817            
Stock Repurchase Program, Number of Shares Repurchased Per Day         5,000            
Treasury Stock, Value, Acquired, Cost Method $ 1,500,000       $ 1,100,000            
Common Stock, Dividends, Per Share, Declared     $ 0.03 $ 0.02     $ 0.03 $ 0.005 $ 0.05 $ 0.01  
Treasury Stock, Shares, Acquired   186,519                  
Treasury Stock, Value, Acquired, Cost Method   $ 5,000,000                  
Stock Repurchase Program, Authorized Amount     $ 5,000,000                
Treasury Stock, Value, Acquired, Cost Method, Excluding Related Party   $ 3,500,000                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           88,097          
Class of Warrant or Right, Exercise Price of Warrants or Rights           $ 3.5043          
Proceeds from Warrant Exercises           $ 309,000     $ 309,000 $ 2,630,000