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Common Stock and Stock Compensation - Stock Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Compensation costs included in net income        
Gross compensation cost $ 609 $ 1,290 $ (1,319) $ 9,487
Income tax expense (benefit) 206 (579) (649) (3,448)
Net compensation expense (benefit) $ 815 $ 711 $ (1,968) $ 6,039