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Goodwill And Intangible Assets (Schedule Of Activity In Goodwill And Core Deposit Intangibles) (Details) (USD $)
 3 Months Ended 6 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
years
Jun. 30, 2010
Goodwill And Intangible Assets [Abstract]            
Goodwill, Beginning Balance   $ 72,334,000     $ 72,334,000  
Goodwill, Amortization             
Goodwill, Ending Balance     72,334,000   72,334,000  
Core Deposit Intangibles, Beginning Balance   4,705,000     6,043,000  
Core Deposit Intangibles, Amortization 669,000 669,000     1,338,000  
Core Deposit Intangibles, Ending Balance     4,705,000   4,705,000  
Total Goodwill and Core Deposit Intangibles, Beginning Balance   77,039,000     78,377,000  
Amortization of intangibles     669,000 842,000 1,338,000 1,778,000
Total Goodwill and Core Deposit Intangibles, Ending Balance     $ 77,039,000   $ 77,039,000  
Core deposit intangibles, useful life, minimum         6  
Core deposit intangibles, useful life, maximum         10