| Note 6 - Stock Repurchase Program | 9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Jun. 30, 2012 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Treasury Stock [Text Block] | 
        NOTE
        6 - Stock
        Repurchase Program
       
        On
        January 17, 2007, the Company announced a Stock Repurchase
        Program under the terms of which up to a million shares of
        its common stock could be purchased during the subsequent
        twelve months. In March 2008, the repurchase program was
        expanded up to a total of 2,000,000 shares to be acquired
        through December 31, 2009.  In February 2009, the
        Board further expanded the repurchase program to a maximum
        of 3,000,000 shares to be acquired through December 31,
        2010.  On March 25, 2010, the Board extended the
        period of the Stock Repurchase Program through December 31,
        2011. In December 2011, the Board further extended the
        period of the Stock Repurchase Program through December 31,
        2012.  From the program’s onset through
        June 30, 2012, the total number of shares repurchased by
        the Company is 1,925,829.  The
        Stock Repurchase Program authorizes purchases in privately
        negotiated transactions as well as in the open
        market.  In October 2008, the Company's
        board of directors authorized repurchases in private
        transactions under the Stock Repurchase Program of shares
        issued under the Company's equity compensation plans to
        directors, employees and other service providers at the
        market price on the effective date of the repurchase
        request. Total repurchases under this amendment are limited
        to an aggregate of 250,000 shares per calendar year and to
        a maximum of 25,000 shares annually per
        individual.  Purchases under this amendment for
        the nine months ended June 30, 2012 and 2011 were 1,000 and
        5,750 shares, respectively.
       
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