Loans Receivable and Allowance for Loan Losses (Loans Receivable Modified as Troubled Debt Restructurings, Previous 12 Months) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Contract	Mar. 31, 2014 Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	3
TDR's, Subsequently Defaulted [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6	15
Recorded Investment	$ 3,634	$ 7,793
TDR's, Subsequently Defaulted [Member] | Commercial and industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	7
Recorded Investment	0	1,260
TDR's, Subsequently Defaulted [Member] | Owner occupied real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	3
Recorded Investment	731	914
TDR's, Subsequently Defaulted [Member] | Commercial construction and land development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	2
Recorded Investment	236	1,930
TDR's, Subsequently Defaulted [Member] | Commercial real estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3	0
Recorded Investment	2,667	0
TDR's, Subsequently Defaulted [Member] | Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	2
Recorded Investment	0	3,213
TDR's, Subsequently Defaulted [Member] | Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	1
Recorded Investment	$ 0	$ 476