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Note 21 - Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

		Fair Value Measurements as of December 31, 2017 Using
		Total				Quoted Prices in Active Markets For Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
		(Dollars in Thousands)
Investment securities, available-for-sale
Mortgage-backed securities:
Residential		$	82,786			$	—			$	82,786			$	—
Commercial			66,074				—				66,074				—
Obligations of states and political subdivisions			4,931				—				4,931				—
U.S. Treasury securities			80				—				80				—
Other assets - derivatives			443				—				443				—

		Fair Value Measurements as of December 31, 2016 Using
		Total					Quoted Prices in Active Markets For Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)					Significant Unobservable Inputs (Level 3)
		(Dollars in Thousands)
Investment securities, available-for-sale
Mortgage-backed securities:
Residential		$	98,409				$	—			$	98,409				$	—
Commercial			70,530					—				70,530					—
Obligations of states and political subdivisions			10,142					—				10,142					—
Obligations of U.S. government-sponsored agencies			1,993					—				1,993					—
Corporate notes			756					—				756					—
U.S. Treasury securities			80					—				80					—
Other assets - derivatives			346					—				346					—

Fair Value Assets Measured On Nonrecurring Basis [Table Text Block]

		Fair Value Measurements as of December 31, 2017 Using
		Total				Quoted Prices in Active Markets For Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
		(Dollars in Thousands)
Impaired loans		$	694			$	—			$	—			$	694
OREO			3,792				—				—				3,792
Other assets			228				—				—				228

		Fair Value Measurements as of December 31, 2016 Using
		Total				Quoted Prices in Active Markets For Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
		(Dollars in Thousands)
Impaired loans		$	1,568			$	—			$	—			$	1,568
OREO			4,858				—				—				4,858
Other assets			280				—				—				280

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

		Level 3 Significant Unobservable Input Assumptions
		Fair Value as of December 31, 2017				Valuation Technique			Unobservable Input			Quantitative Range of Unobservable Inputs (Weighted Average)
		(Dollars in Thousands)
Impaired loans		$	694			Multiple data points, including discount to appraised value of collateral based on recent market activity			Appraisal comparability adjustment (discount)			9%	- (9.5)%	10%
OREO		$	3,792			Discount to appraised value of property based on recent market activity for sales of similar properties			Appraisal comparability adjustment (discount)			9%	- (9.5)%	10%
Other assets		$	228			Discount to appraised value of property based on recent market activity for sales of similar properties			Appraisal comparability adjustment (discount)			9%	- (9.5)%	10%

Fair Value, by Balance Sheet Grouping [Table Text Block]

		December 31, 2017
		Carrying Amount				Estimated Fair Value				Level 1				Level 2				Level 3
		(Dollars in Thousands)
Assets:
Cash and cash equivalents		$	27,124			$	27,124			$	27,124			$	—			$	—
Investment securities available-for-sale			153,871				153,871				—				153,871				—
Investment securities held-to-maturity			26,279				25,949				—				25,949				—
Federal funds sold			15,000				15,000				—				15,000				—
Federal Home Loan Bank stock			1,609				1,609				—				—				1,609
Loans, net of allowance for loan losses			346,121				342,248				—				—				342,248
Other assets – derivatives			443				443				—				443				—
Liabilities:
Deposits			517,079				515,645				—				515,645				—
Short-term borrowings			15,594				15,594				—				15,594				—
Long-term debt			10,000				9,998				—				9,998				—

		December 31, 2016
		Carrying Amount				Estimated Fair Value				Level 1				Level 2				Level 3
		(Dollars in Thousands)
Assets:
Cash and cash equivalents		$	23,530			$	23,530			$	23,530			$	—			$	—
Investment securities available-for-sale			181,910				181,910				—				181,910				—
Investment securities held-to-maturity			25,904				25,508				—				25,508				—
Federal Home Loan Bank stock			1,581				1,581				—				—				1,581
Loans, net of allowance for loan losses			322,772				319,881				—				—				319,881
Other assets – derivatives			346				346				—				346				—
Liabilities:
Deposits			497,556				497,037				—				497,037				—
Short-term borrowings			10,119				10,119				—				10,119				—
Long-term debt			15,000				14,998				—				14,998				—