Loans and Related Allowance for Credit Losses (Troubled Debt Restructurings on Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 security	Sep. 30, 2012	Sep. 30, 2013 loan	Sep. 30, 2012
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts			6
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 622
Financing Receivable, Modifications, Post-Modification Recorded Investment			630
Financing Receivable, Modifications, Recorded Investment	630		630
Troubled Debt Restructuring, Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts			6
Financing Receivable, Modifications, Pre-Modification Recorded Investment			622
Financing Receivable, Modifications, Post-Modification Recorded Investment			630
Financing Receivable, Modifications, Recorded Investment	630		630
Troubled Debt Restructuring, Current Period [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts	1		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	46
Financing Receivable, Modifications, Post-Modification Recorded Investment	50	0		0
Financing Receivable, Modifications, Recorded Investment	50		50
Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts			1
Financing Receivable, Modifications, Pre-Modification Recorded Investment			64
Financing Receivable, Modifications, Post-Modification Recorded Investment			61
Financing Receivable, Modifications, Recorded Investment	61		61
Real Estate - Commercial [Member] | Troubled Debt Restructuring, Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts			1
Financing Receivable, Modifications, Pre-Modification Recorded Investment			64
Financing Receivable, Modifications, Post-Modification Recorded Investment			61
Financing Receivable, Modifications, Recorded Investment	61		61
Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts			5
Financing Receivable, Modifications, Pre-Modification Recorded Investment			558
Financing Receivable, Modifications, Post-Modification Recorded Investment			569
Financing Receivable, Modifications, Recorded Investment	569		569
Real Estate - Mortgage [Member] | Troubled Debt Restructuring, Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts			5
Financing Receivable, Modifications, Pre-Modification Recorded Investment			558
Financing Receivable, Modifications, Post-Modification Recorded Investment			569
Financing Receivable, Modifications, Recorded Investment	569		569
Real Estate - Mortgage [Member] | Troubled Debt Restructuring, Current Period [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Modifications, Number of Contracts	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	46
Financing Receivable, Modifications, Post-Modification Recorded Investment	50
Financing Receivable, Modifications, Recorded Investment	$ 50		$ 50