Investment Securities (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) security	Dec. 31, 2015 USD ($) security	Dec. 31, 2014 USD ($)
Schedule of Investments [Line Items]
Available-for-sale Securities Pledged as Collateral | $	$ 131,469,000	$ 130,298,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	151	47
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $	$ 4,565,000	$ 403,000
Available-for-sale, Securities in Unrealized Loss Positions, Depreciation Percentage	3.82%	1.19%
Available-for-sale Securities, Gross Realized Gains | $	$ 1,927,000	$ 325,000	$ 168,000
Number of debt securities sold for gross realized gains | security	102
Number of debt securities sold for gross realized losses | security	56
Available-for-sale Securities, Gross Realized Losses | $	$ 881,000	$ 0	$ 0
Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	149	45
Equity Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	2	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $	$ 112,000	$ 33,000