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Common Stock, Options and Stock Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Compensation costs included in net income        
Gross compensation costs $ 2,148 $ 1,953 $ 5,202 $ 5,191
Income tax benefits (727) (650) (1,746) (1,666)
Net compensation expense 1,421 1,303 3,456 3,525
Proceeds from exercise of stock options     45 647
Common Stock Class A Non-voting
       
Compensation costs included in net income        
Stock options exercised, shares 15,000 5,400 18,000 201,298
Proceeds from exercise of stock options       $ 600