Note 14 - Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Defined Benefit Plan, Benefits Payment [Table Text Block]

(Dollars in thousands)
2018			2017				2016
Date Paid	Amount		Date Paid		Amount		Date Paid	Amount
	$	0	01/06/2017	(1)	$	119		$	0
10/11/2018		26	10/15/2017			27	10/15/2016		33
12/27/2018		92	12/27/2017			99			0
Total	$	118			$	245		$	33

Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]

	2018			2017			2016
Shares held by participants beginning of the year		357,135			339,870			334,277
Shares allocated to participants		24,317			24,317			24,377
Shares distributed to participants		(41,215	)		(7,052	)		(18,784	)
Shares held by participants end of year		340,237			357,135			339,870
Unreleased shares beginning of the year		255,429			279,746			304,123
Shares released during year		(24,317	)		(24,317	)		(24,377	)
Unreleased shares end of year		231,112			255,429			279,746
Total ESOP shares end of year		571,349			612,564			619,616
Fair value of unreleased shares at December 31	$	4,534,417			4,878,694			4,895,555

Share-based Compensation, Stock Options, Activity [Table Text Block]

												Unvested options
	Shares Available For Grant			Unvested Restricted Shares Outstanding			Options Outstanding			Award Value/ Weighted Average Exercise Price		Number			Weighted Average Grant Date Fair Value		Vesting Period (in years)
2009 Plan
December 31, 2015		96,341			38,886			15,000		$	4.77		0
Granted January 26, 2016		(4,087	)		3,406			0			N/A		0				3
Granted January 26, 2016		(34,229	)		0			34,229			11.21		34,229		$	4.04	3
Granted April 26, 2016		(3,149	)		2,624			0			N/A		0				1
Vested		0			(24,320	)		0			N/A		0
December 31, 2016		54,876			20,596			49,229		$	9.25		34,229		$	4.04
Granted January 31, 2017		(11,164	)		9,303			0			N/A						3
Transferred to 2017 Plan		(43,712	)		0			0			N/A
Vested		0			(15,018	)		0			N/A		(11,409	)		4.04
December 31, 2017		0			14,881			49,229		$	9.25		22,820		$	4.04
Options Exercised		0			0			(15,000	)
Vested		0			(7,541	)		0			N/A		(11,410	)		4.04
December 31, 2018		0			7,340			34,229		$	11.21		11,410		$	4.04
2017 Plan
April 25, 2017		375,000			0			0
Granted May 5, 2017		(3,420	)		2,280			0			N/A						1
Transferred from 2009 Plan		43,712			0			0			N/A		0
December 31, 2017		415,292			2,280			0			N/A		0
Granted January 23, 2018		(10,044	)		6,696			0			N/A						3
Granted April 24, 2018		(792	)		528			0			N/A						1
Vested		0			(2,280	)		0			N/A		0
December 31, 2018		404,456			7,224			0			N/A		0
Total all plans		404,456			14,564			34,229		$	11.21		11,410		$	4.04

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

(Dollars in thousands) Date of Grant	Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life in Years		Number Exercisable		Number Unexercisable		Unrecognized Compensation Expense		Weighted Average Years Over Which Unrecognized Compensation will be Recognized
January 26, 2016	$	11.21		34,229		7.1		22,819		11,410	$	1,165		0.1
				34,229				22,819		11,410	$	1,165

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2016
Risk-free interest rate		2.10	%
Expected life (in years)		10
Expected volatility		22.83	%
Expected dividends		0.00	%