Fair Value Measurements, Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	$ 199,365	$ 214,192
U.S. Treasury Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	20,000	0
Obligations of US Government Agencies [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	9,195	24,240
Obligations of States and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	77,987	78,433
Mortgage-backed Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	83,694	107,396
Money Market Investments [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	647	631
Other Marketable Equity Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	164	99
Recurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	199,365	214,192
Recurring [Member] | U.S. Treasury Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	20,000
Recurring [Member] | Obligations of US Government Agencies [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	9,195	24,240
Recurring [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	77,987	78,433
Recurring [Member] | Mortgage-backed Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	83,694	107,396
Recurring [Member] | Money Market Investments [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	647	631
Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	7,678	3,393
Recurring [Member] | Other Marketable Equity Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	164	99
Nonrecurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	2,675
Other assets, fair value disclosure	940	2,741
Nonrecurring [Member] | Foreclosed Assets, Residential 1 to 4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		724
Nonrecurring [Member] | Foreclosed Assets, Commercial [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		927
Nonrecurring [Member] | Foreclosed Assets, Construction [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure	940	1,090
Nonrecurring [Member] | Total Mortgage Loans on real estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	1,957	1,281
Nonrecurring [Member] | Residential 1-4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	400	952
Nonrecurring [Member] | Commercial Real Estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	1,483	267
Nonrecurring [Member] | Construction Loans [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	74	62
Nonrecurring [Member] | Other [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	718
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Loans, net of allowances for loan losses	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | U.S. Treasury Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Obligations of US Government Agencies [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Mortgage-backed Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Money Market Investments [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring [Member] | Other Marketable Equity Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0
Other assets, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Foreclosed Assets, Residential 1 to 4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Foreclosed Assets, Commercial [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Foreclosed Assets, Construction [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Total Mortgage Loans on real estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Residential 1-4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Commercial Real Estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Construction Loans [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonrecurring [Member] | Commercial Loan [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	199,365	214,192
Loans, net of allowances for loan losses	0	0
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	199,365	214,192
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | U.S. Treasury Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	20,000
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Obligations of US Government Agencies [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	9,195	24,240
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	77,987	78,433
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Mortgage-backed Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	83,694	107,396
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Money Market Investments [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	647	631
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	7,678	3,393
Significant Other Observable Inputs (Level 2) [Member] | Recurring [Member] | Other Marketable Equity Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	164	99
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0
Other assets, fair value disclosure	0	0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Foreclosed Assets, Residential 1 to 4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Foreclosed Assets, Commercial [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Foreclosed Assets, Construction [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure	0	0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Total Mortgage Loans on real estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Residential 1-4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Commercial Real Estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Construction Loans [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0	0
Significant Other Observable Inputs (Level 2) [Member] | Nonrecurring [Member] | Commercial Loan [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Loans, net of allowances for loan losses	594,190	559,488
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | U.S. Treasury Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Obligations of US Government Agencies [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Mortgage-backed Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Money Market Investments [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Recurring [Member] | Other Marketable Equity Securities [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Securities available-for-sale	0	0
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	2,675
Other assets, fair value disclosure	940	2,741
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Foreclosed Assets, Residential 1 to 4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		724
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Foreclosed Assets, Commercial [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure		927
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Foreclosed Assets, Construction [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Other assets, fair value disclosure	940	1,090
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Total Mortgage Loans on real estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	1,957	1,281
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Residential 1-4 Family [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	400	952
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Commercial Real Estate [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	1,483	267
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Construction Loans [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	74	$ 62
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring [Member] | Commercial Loan [Member]
Fair Value, Assets Measured on Recurring and Nonrecurring Basis, Alternative [Abstract]
Loans, net of allowances for loan losses	$ 718