Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stock Repurchase Program (Detail) - Stock Repurchase Program

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Note 6 - Stock Repurchase Program (Detail) - Stock Repurchase Program (USD $)
75 Months Ended
Mar. 31, 2013
Sep. 30, 2012
Total Number of Shares Purchased 2,011,954  
Average Price Paid Per Share (in Dollars per share) $ 3.50  
Dollar Amount (in Dollars) $ 7,044,235 $ 6,672,243
Quarterly Subtotal 2012 [Member] | December 1, 2012 - December 31, 2012 [Member]
   
Total Number of Shares Purchased 25,000  
Average Price Paid Per Share (in Dollars per share) $ 7.12  
Dollar Amount (in Dollars) 178,000  
Quarterly Subtotal 2013 [Member] | March 1, 2013 - March 31, 2013 [Member]
   
Total Number of Shares Purchased 28,125  
Average Price Paid Per Share (in Dollars per share) $ 6.90  
Dollar Amount (in Dollars) 193,992  
Six Month Subtotal 2012 - 2013 [Member] | March 1, 2013 - March 31, 2013 [Member]
   
Total Number of Shares Purchased 53,125  
Average Price Paid Per Share (in Dollars per share) $ 7.00  
Dollar Amount (in Dollars) 371,992  
January 1, 2007 to September 30, 2012 [Member]
   
Total Number of Shares Purchased 1,958,829  
Average Price Paid Per Share (in Dollars per share) $ 3.41  
Dollar Amount (in Dollars) 6,672,243  
December 1, 2012 - December 31, 2012 [Member]
   
Total Number of Shares Purchased 25,000  
Average Price Paid Per Share (in Dollars per share) $ 7.12  
Dollar Amount (in Dollars) 178,000  
March 1, 2013 - March 31, 2013 [Member]
   
Total Number of Shares Purchased 28,125  
Average Price Paid Per Share (in Dollars per share) $ 6.90  
Dollar Amount (in Dollars) $ 193,992