Loans (Non-Covered Loans Modified As TDR) (Details) (Troubled Debt Restructurings Subsequently Defaulted [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Financing Receivable, Modifications [Line Items]
Number of Contracts	5
Recorded Investment	$ 2,919
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2
Recorded Investment	1,389
Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1
Recorded Investment	1,130
Total Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1
Recorded Investment	1,130
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2
Recorded Investment	$ 400