Securities (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 security	Dec. 31, 2012 security	Dec. 31, 2011
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Number of securities in a continuous unrealized loss position total	21	13
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
Securities available for sale and held to maturity pledged as collateral, fair value	397,500,000	386,500,000
Credit-related impairment losses recognized in earnings	3,489,000	221,000	191,000
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	2,200,000
Amortized cost of callable debt securities	106,800,000
Callable debt securities, fair value	102,300,000
Available for sale securities	392,903,000	375,498,000
Minimum [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Callable debt securities, call feature period	1 month
Callable debt securities, maturity period	21 months
Maximum [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Callable debt securities, call feature period	3 years
Callable debt securities, maturity period	23 years
Trust Preferred Securities Individual Name Issuers [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
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 debt securities amortized cost	30,715,000	30,677,000
Available for sale securities	24,684,000	24,751,000
Trust preferred securities: Collateralized debt obligations [Member]
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Number of securities in a continuous unrealized loss position total		2
Available for sale debt securities amortized cost	547,000	4,036,000
Available for sale securities	$ 547,000	$ 843,000