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Note U - Comprehensive Income (Detail) (USD $)
In Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax $ 494 $ 436 $ 412 $ 656
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 24,189 $ 20,235 $ 41,959 $ 35,840