Note 9 - Fair Value Measurements and Disclosures (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Financial Assets Measured at Fair Value on a Recurring and Nonrecurring Basis

	Quotedprices in active markets for identical assets (Level 1)		Significant other observable input (Level 2)		Significant unobservable inputs (Level 3)		Balance at end of period
Recurring fair value measurements
Equity securities	$	9,600	$	—	$	—	$	9,600
Debt securities available-for-sale
U.S. Government agency securities		—		69,495		—		69,495
State and municipal securities		—		70,952		—		70,952
U.S. Government agencies and sponsored    enterprises (GSEs):
Mortgage-backed securities		—		127,426		—		127,426
Collateralized mortgage obligations (CMOs)		—		71,257		—		71,257
Pooled trust preferred securities		—		—		118		118
Corporate debt securities		—		4,946		—		4,946
Total debt securities available-for-sale		—		344,076		118		344,194
Total recurring fair value measurements	$	9,600	$	344,076	$	118	$	353,794
Nonrecurring fair value measurements
Impaired loans	$	—	$	—	$	446	$	446
Mortgage servicing rights		—		—		6		6
Total nonrecurring fair value measurements	$	—	$	—	$	452	$	452

December 31, 2017	Quoted prices in active markets for identical assets (Level 1)		Significant other observable input (Level 2)		Significant unobservable inputs (Level 3)		Balance at end of period
Recurring fair value measurements
Equity securities	$	4,975	$	—	$	—	$	4,975
Debt securities available-for-sale
U.S. Government agency securities		—		70,524		—		70,524
State and municipal securities		—		76,804		—		76,804
U.S. Government agencies and sponsored    enterprises (GSEs):
Mortgage-backed securities		—		142,703		—		142,703
Collateralized mortgage obligations (CMOs)		—		76,302		—		76,302
Pooled trust preferred securities		—		—		215		215
Corporate debt securities		—		8,022		—		8,022
Total debt securities available-for-sale		—		374,355		215		374,570
Total recurring fair value measurements	$	4,975	$	374,355	$	215	$	379,545
Nonrecurring fair value measurements
Impaired loans	$	—	$	—	$	1,067	$	1,067
Mortgage servicing rights		—		—		34		34
Total nonrecurring fair value measurements	$	—	$	—	$	1,101	$	1,101

Quantitative Information about Assets Measured at Fair Value

	Quantitative information about Level 3 fair value measurements
June 30, 2018	Fair value		Valuation techniques		Unobservable input		Value or range of values
Impaired loans	$	299	Appraisal of collateral	(1)	Appraisal adjustments	(2)	-20% to -80%
					Liquidation expenses	(3)	-10%
Impaired loans		147	Financial statement values for UCC collateral		Financial statement value discounts	(4)	-20% to -50%
Mortgage servicing rights		6	Discounted cash flow		Remaining term		2 to 27 years
					Discount rate			12.50	%

	Quantitative information about Level 3 fair value measurements
December 31, 2017	Fair value		Valuation techniques		Unobservable input		Value or range of values
Impaired loans	$	943	Appraisal of collateral	(1)	Appraisal adjustments	(2)	-15% to -90%
					Liquidation expenses	(3)	-10%
Impaired loans		124	Financial statement values for UCC collateral		Financial statement value discounts	(4)	-25% to -50%
Mortgage servicing rights		34	Discounted cash flow		Remaining term		2 to 26 years
					Discount rate		13% to 15%

Available-for-sale Securities Measured at Fair Value Using Significant Unobservable Inputs

	Fair value measurements using significant unobservable inputs (Level 3)
	2018			2017
Balance, January 1,	$	215		$	2,281
Payments received		(119	)		(55	)
Sale of securities		—			(2,026	)
Total gains or losses (realized/unrealized)
Included in earnings		—			(15	)
Included in other comprehensive income		22			27
Transfers in and/or out of Level 3		—			—
Balance, June 30,	$	118		$	212

Financial and Off-balance Sheet Instruments

					Fair value measurements
June 30, 2018	Carrying amount		Fair value		Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Financial assets
Cash and cash equivalents	$	11,726	$	11,726	$	11,726	$	—	$	—
Investment securities:
Equities		9,600		9,600		9,600		—		—
Available-for-sale		344,194		344,194		—		344,076		118
Restricted investment in stocks		2,668		2,668		—		2,668		—
Loans held-for-sale		404		415		—		415		—
Net loans		771,694		774,814		—		—		774,814
Mortgage servicing rights		466		609		—		—		609
Accrued interest receivable		3,573		3,573		—		3,573		—
Financial liabilities
Deposits with no stated maturities	$	763,007	$	763,007	$	763,007	$	—	$	—
Deposits with stated maturities		222,719		218,800		—		218,800		—
Short-term borrowings		85,646		85,646		85,646		—		—
Accrued interest payable		371		371		—		371		—
Off-balance sheet instruments
Commitments to extend credit	$	—	$	—	$	—	$	—	$	—
Standby letters of credit		—		—		—		65		—

					Fair value measurements
December 31, 2017	Carrying amount		Fair value		Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Financial assets
Cash and cash equivalents	$	16,331	$	16,331	$	16,331	$	—	$	—
Investment securities:
Equities		4,975		4,975		4,975		—		—
Available-for-sale		374,570		374,570		—		374,355		215
Restricted investment in stocks		1,501		1,501		—		1,501		—
Net loans		725,442		727,341		—		—		727,341
Mortgage servicing rights		483		585		—		—		585
Accrued interest receivable		3,545		3,545		—		3,545		—
Financial liabilities
Deposits with no stated maturities	$	768,766	$	768,766	$	768,766	$	—	$	—
Deposits with stated maturities		225,182		223,325		—		223,325		—
Short-term borrowings		55,756		55,756		55,756		—		—
Accrued interest payable		384		384		—		384		—
Off-balance sheet instruments
Commitments to extend credit	$	—	$	—	$	—	$	—	$	—
Standby letters of credit		—		—		—		—		—