Note 8 - Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Servicing Liability at Amortized Cost [Table Text Block]

(Dollars in thousands)	2017			2016
Mortgage servicing rights:
Balance, beginning of year	$	1,604			1,499
Originations		675			706
Amortization		(555	)		(601	)
Balance, end of year		1,724			1,604
Valuation reserve		0			0
Mortgage servicing rights, net	$	1,724			1,604
Fair value of mortgage servicing rights	$	3,196			2,952

Summary of Risk Characteristics of Loans Being Serviced [Table Text Block]

(Dollars in thousands)	Loan Principal Balance		Weighted Average Interest Rate			Weighted Average Remaining Term (months)		Number of Loans
Original term:
30 year fixed rate	$	266,560		4.07	%		306		2,119
15 year fixed rate		102,957		3.10			136		1,084
Adjustable rate		55		3.25			281		2

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Gross					Unamortized
	Carrying		Accumulated			Intangible
(Dollars in thousands)	Amount		Amortization			Assets
December 31, 20 1 7
Mortgage servicing rights	$	4,244		(2,520	)		1,724
Core deposit intangible		574		(219	)		355
Goodwill		802		0			802
Total	$	5,620		(2,739	)		2,881
December 31, 201 6
Mortgage servicing rights	$	3,954		(2,350	)		1,604
Core deposit intangible		574		(120	)		454
Goodwill		802		0			802
Total	$	5,330		(2,470	)		2,860

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(Dollars in thousands)	Mortgage Servicing Rights		Core Deposit Intangible		Total Amortizing Intangible Assets
Year ended December 31,
201 8	$	438		99		537
201 9		378		99		477
2020		305		99		404
202 1		256		47		303
202 2		191		11		202
Thereafter		156		0		156
	$	1,724		355		2,079