Note 10 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

December 31, (In thousands)	20 17		201 6		201 5
Currently payable	$	6,502	$	5,556	$	3,662
Revaluation of deferred income taxes resulting from change in statutory tax rates		5,869		-		-
Deferred		270		885		1,631
Total income tax expense	$	12,641	$	6,441	$	5,293

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

December 31,	201 7			201 6			201 5
Federal statutory rate		35.0	%		35.0	%		35.0	%
Changes from statutory rates resulting from:
Revaluation of deferred income taxes resulting from changes in statutory tax rates		24.1			-			-
Tax-exempt interest		(4.1	)		(4.6	)		(5.8	)
Nondeductible interest to carry tax-exempt obligations		.1			.2			.2
Premium income not subject to tax		(1.4	)		(1.3	)		(1.5	)
Company-owned life insurance		(1.6	)		(1.5	)		(1.6	)
Other, net		(.1	)		.1			(.2	)
Effective tax rate on pretax income		52.0	%		27.9	%		26.1	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

December 31, (In thousands)	201 7		201 6
Assets
Allowance for loan losses	$	2,058	$	3,285
Deferred compensation		135		236
Postretirement benefit obligations		3,605		5,825
Other real estate owned		621		1,303
Self-funded insurance		114		232
Paid time off		472		815
Depreciation		1,059		1,630
Intangibles		806		1,878
Unrealized loss on available for sale investment securities, net		933		1,811
Other		147		239
Total deferred tax assets		9,950		17,254
Liabilities
Prepaid expenses		-		153
Federal Home Loan Bank stock dividends		621		1,035
Deferred loan fees		523		846
Other		31		52
Total deferred tax liabilities		1,175		2,086
Net deferred tax asset	$	8,775	$	15,168