Investment Securities (Narrative) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($) security	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) security	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) security
Schedule of Investments [Line Items]
Available-for-sale Securities Pledged as Collateral	$ 168,085,000		$ 168,085,000		$ 130,298,000
Available-for-sale Securities, Gross Realized Gains	$ 200,000	$ 138,000	$ 413,000	$ 315,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	32		32		47
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 214,000		$ 214,000		$ 403,000
Available-for-sale, Securities in Unrealized Loss Positions, Impairment Percentage			1.00%		1.00%
Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	30		30		44
Equity Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	2		2		3
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 109,000		$ 109,000		$ 43,000