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Security Types (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	$ 3,047	$ 5,000
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	25,983	27,972
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	46,274	45,068
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	168,268	163,647
Available-for-sale Securities, Fair Value, Total	243,572	241,687
Available For Sale Securities, Gross Unrealized Gains	2,391	4,374
Available For Sale Securities, Gross Unrealized Losses	3,512	1,305
Available-for-sale Securities, Amortized Cost Basis	244,693	238,618
US Government and Government Agencies and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	3,047	5,000
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	22,531	25,852
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	19,893	19,463
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	0	9,770
Available-for-sale Securities, Fair Value, Total	45,471	60,085
Available For Sale Securities, Gross Unrealized Gains	331	384
Available For Sale Securities, Gross Unrealized Losses	973	518
Available-for-sale Securities, Amortized Cost Basis	46,113	60,219
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	972	1,623
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	16,171	13,511
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	110,644	95,820
Available-for-sale Securities, Fair Value, Total	127,787	110,954
Available For Sale Securities, Gross Unrealized Gains	551	968
Available For Sale Securities, Gross Unrealized Losses	1,805	780
Available-for-sale Securities, Amortized Cost Basis	129,041	110,766
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	0	0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	2,480	497
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	10,210	12,094
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	57,624	58,057
Available-for-sale Securities, Fair Value, Total	70,314	70,648
Available For Sale Securities, Gross Unrealized Gains	1,509	3,022
Available For Sale Securities, Gross Unrealized Losses	734	7
Available-for-sale Securities, Amortized Cost Basis	$ 69,539	$ 67,633

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Fair value of available-for-sale debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of available-for-sale debt securities maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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