Note 11 - Federal Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

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

	2014		2013		2012
Current expense	$	3,359,000	$	0	$	0
Deferred expense		4,506,000		8,092,000		5,636,000
Tax expense	$	7,865,000	$	8,092,000	$	5,636,000

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

	2014			2013			2012
Tax at statutory rate (35%)	$	8,819,000		$	8,794,000		$	6,360,000
Increase (decrease) from
Tax-exempt interest		(621,000	)		(347,000	)		(486,000	)
Bank owned life insurance		(415,000	)		(465,000	)		(535,000	)
Other		82,000			110,000			297,000
Tax expense	$	7,865,000		$	8,092,000		$	5,636,000

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

	2014			2013
Deferred income tax assets
Allowance for loan losses	$	7,014,000		$	7,987,000
Tax credit carryforwards		3,395,000			1,397,000
Nonaccrual loan interest income		471,000			605,000
Deferred compensation		1,304,000			567,000
Deferred loan fees		445,000			273,000
Fair value write-downs on foreclosed properties		212,000			241,000
Fair value of interest rate swap		89,000			92,000
Losses on capital investments		450,000			0
Stock compensation		521,000			207,000
Net operating loss carryforward		0			4,050,000
Unrealized loss on securities		0			2,908,000
Other		725,000			136,000
		14,626,000			18,463,000
Deferred income tax liabilities
Depreciation		1,217,000			419,000
Prepaid expenses		425,000			192,000
Core deposit intangible		5,386,000			0
Mortgage loan servicing rights		2,349,000			0
Unrealized gain on securities		112,000			0
Other		476,000			98,000
		9,965,000			709,000
Net deferred tax asset before valuation allowance		4,661,000			17,754,000
Valuation allowance		(450,000	)		0
Total net deferred tax asset	$	4,211,000		$	17,754,000