Borrowings (Narrative - Junior Subordinated Debentures) (Details) - USD ($) $ in Thousands	12 Months Ended	61 Months Ended	63 Months Ended	73 Months Ended	76 Months Ended
	Dec. 31, 2016	Sep. 15, 2010	Nov. 23, 2010	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Aug. 29, 2005
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Junior subordinated debentures	$ 22,681			$ 22,681	$ 22,681	$ 22,681
Trust Preferred Securities [Member] | Trust I Capital Securities [Member] | Private Placement [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Amount of capital securities issued							$ 8,300
Minimum redemption period	5 years
Redemption rate		5.97%
Description of variable rate basis					three-month LIBOR
Basis spread on variable rate					1.45%
Trust Preferred Securities [Member] | Trust I Debentures [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Junior subordinated debentures							8,300
Redemption rate		5.97%
Description of variable rate basis					three-month LIBOR
Basis spread on variable rate					1.45%
Trust Preferred Securities [Member] | Trust II Capital Securities [Member] | Private Placement [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Amount of capital securities issued							14,400
Minimum redemption period	5 years
Redemption rate			5.96%
Description of variable rate basis				three-month LIBOR
Basis spread on variable rate				1.45%
Trust Preferred Securities [Member] | Trust II Debentures [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Junior subordinated debentures							$ 14,400
Redemption rate			5.96%
Description of variable rate basis				three-month LIBOR
Basis spread on variable rate				1.45%