Commitments and Contingencies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Line Items]
Standby letters of credit extension period	1 year
Operating leases rental expense	$ 3,100,000	$ 2,800,000	$ 2,800,000
Unpaid principal balance of loans repurchased	342,000	682,000
Reserve for loans repurchases	280,000	275,000
Minimum [Member]
Commitments and Contingencies Disclosure [Line Items]
Lease expiration period	2 months
Lease expiration period, renewal option	3 months
Maximum [Member]
Commitments and Contingencies Disclosure [Line Items]
Lease expiration period	26 years
Lease expiration period, renewal option	25 years
Commitments to Extend Credit on Standby Letters of Credit [Member] | Commitments to Extend Credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract Amount	$ 5,102,000	$ 1,363,000