Noncovered Loans Noncovered Loans (Analysis of Troubled Debt Restructurings) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Modifications
Financing Receivable, Modifications [Line Items]
Number of TDR Modifications	1
Pre-Modification Outstanding Recorded Investment	$ 117
Post-Modification Outstanding Recorded Investment	117
Land And Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Number of TDR Modifications	1
Pre-Modification Outstanding Recorded Investment	117
Post-Modification Outstanding Recorded Investment	$ 117