Loans Receivable and Allowance for Loan Losses (Troubled Debt Restructuring) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013 Numberofloans	Dec. 31, 2012 Numberofloans
Financing Receivable, Modifications [Line Items]
Number of loans	3	4
Accrual status	$ 4,405	$ 7,511
Non-accrual status	0	0
Total TDRs	4,405	7,511
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	1	1
Accrual status	300	1,261
Non-accrual status	0	0
Total TDRs	300	1,261
Construction and Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	0	1
Accrual status	0	2,069
Non-accrual status	0	0
Total TDRs	0	2,069
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	1	1
Accrual status	2,201	2,248
Non-accrual status	0	0
Total TDRs	2,201	2,248
Owner occupied Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	1	1
Accrual status	1,904	1,933
Non-accrual status	0	0
Total TDRs	1,904	1,933
Consumer and Other [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	0	0
Accrual status	0	0
Non-accrual status	0	0
Total TDRs	0	0
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	0	0
Accrual status	0	0
Non-accrual status	0	0
Total TDRs	$ 0	$ 0