Securities (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 security	Dec. 31, 2013 security	Dec. 31, 2012
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 351,068,000	$ 387,910,000
Available for sale securities amortized cost	351,068,000
Securities available for sale and held to maturity pledged as collateral, fair value	350,500,000	397,500,000
Credit-related impairment losses recognized in earnings	0	3,489,000	221,000
Amortized cost of callable debt securities	102,300,000
Fair value of callable debt securities	98,600,000
Number of securities in a continuous unrealized loss position total	15	21
Amortized cost of trust preferred securities of individual name issuers that are below investment grade	11,900,000
Unrealized losses of trust preferred securities of individual name issuers that are below investment grade	2,100,000
Trust Preferred Securities Pooled Issuers on Nonaccrual Status Credit-related Impairment Losses First Security	2,800,000
Trust Preferred Securities Pooled Issuers on Nonaccrual Status Credit-related Impairment Losses Second Security	717,000
Available for sale securities	357,662,000	392,903,000
Minimum [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Callable Debt Securities, Maturity Period	9 months
Callable debt securities, call feature period	1 month
Maximum [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Callable Debt Securities, Maturity Period	22 years
Callable debt securities, call feature period	2 years
Trust Preferred Securities Individual Name Issuers [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	30,753,000	30,715,000
Number of securities in a continuous unrealized loss position total	11	11
Securities in continuous unrealized loss position, number of companies issuing securities	7
Available for sale securities	25,774,000	24,684,000
Trust preferred securities: Collateralized debt obligations [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis		547,000
Available for sale securities		$ 547,000