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Note C - Comprehensive Income (Details) (USD $)
In Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Net income $ 30,121 $ 12,668 $ 80,475 $ 102,690
Other comprehensive income, net of tax of:        
Unrealized loss on available-for-sale securities, net     (2,589)  
Gain on sale of investments reclassified into earnings     (5,153)  
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 54,481 $ 23,809 $ 72,733 $ 103,287