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Premises And Equipment (Narrative) (Details) (USD $)	12 Months Ended
Premises And Equipment (Narrative) (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Depreciation and amortization expense	$ 7,600,000	$ 7,100,000	$ 7,500,000
Rent expense	2,400,000	2,600,000	2,800,000
Future rental payments	101,000
Vision Bank [Member]
Rent expense	$ 687,000	$ 732,000	$ 775,000

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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