Note 8 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

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

(In thousands)	2017			2016		2015
Current tax expense
Federal	$	12,622		$	14,270	$	15,478
State		546			698		608
Total current tax expense		13,168			14,968		16,086
Deferred tax expense (benefit)
Federal		3,783			192		748
State		(4	)		36		54
Total deferred tax expense (benefit)		3,779			228		802
Change in valuation allowance		192			48		45
Total income tax expense	$	17,139		$	15,244	$	16,933

Schedule of Income Tax Expense Benefit, Recorded Directly to Stockholders Equity [Table Text Block]

(In thousands)	2017			2016			2015
Unrealized (loss) gain on securities available for sale	$	(531	)	$	(1,171	)	$	(839	)
Reclassification adjustment for securities losses realized in income		81			–			–
Reclassification adjustment for securities impairment realized in income		–			–			36
Unrealized (loss) gain on derivatives		112			24			(41	)
Minimum pension liability adjustment		(9	)		1			61
Compensation expense for tax purposes in excess of amounts recognized for financial reporting purposes		–			(1,705	)		(673	)
Total income tax (benefit) expense recorded directly to stockholders ’ equity	$	(347	)	$	(2,851	)	$	(1,456	)

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

	Year ended December 31,
	2017			2016			2015
U.S. federal income tax rate		35.0	%		35.0	%		35.0	%
Tax credits		(14.4	)		(9.7	)		(2.5	)
Net deferred tax asset remeasurement		10.8			–			–
Amortization/impairment of investments in tax credit partnerships		3.4			2.8			0.4
Stock based compensation		(2.6	)		–			–
Cash surrender value of life insurance		(1.5	)		(0.9	)		(0.8	)
Tax exempt interest income		(1.2	)		(1.2	)		(1.4	)
Other, net		0.9			0.3			(0.2	)
State income taxes		0.7			0.8			0.8
Effective tax rate		31.1	%		27.1	%		31.3	%

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

	December 31,
(In thousands)	2017			2016
Allowance for loan loss	$	5,422		$	8,581
Deferred compensation		4,148			5,589
Accrued expenses		798			1,360
Investments in partnerships		565			905
Write-downs and costs associated with other real estate owned		39			29
Loans		442			685
Other-than-temporary impairment		–			37
Securities		121			–
Other assets		186			185
Total deferred tax assets		11,721			17,371
Securities		–			438
Property and equipment		764			1,409
Loan costs		588			923
Mortgage servicing rights		161			280
Leases		149			381
Core deposit intangible		267			502
Other liabilities		260			408
Total deferred tax liabilities		2,189			4,341
Valuation allowance		(326	)		(134	)
Net deferred tax asset	$	9,206		$	12,896

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

(In thousands)	2017			2016
Balance as of January 1	$	40		$	40
Increases - current year tax positions		11			11
Increases - prior year tax positions		–			–
Settlements		–			–
Lapse of statute of limitations		(11	)		(11	)
Balance as of December 31	$	40		$	40