Note 16 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Stock-based compensation expense

	2021		2020		2019
	(dollars in thousands)
Stock options	$	270	$	297	$	475
Restricted stock awards		1,864		1,619		1,850
Stock purchase plan		218		234		144
	$	2,352	$	2,150	$	2,469

Summary of the stock option plans

	December 31,
	2021				2020				2019
			Weighted				Weighted				Weighted
			Average				Average				Average
			Exercise				Exercise				Exercise
	Shares		Price		Shares		Price		Shares		Price
Outstanding, beginning		407,763	$	22.24		426,913	$	20.14		469,572	$	18.52
Granted		22,150		43.61		23,350		39.12		20,200		36.00
Exercised		(60,317)		15.76		(41,650)		10.67		(59,393)		12.11
Forfeited		(1,598)		38.50		(850)		19.94		(3,466)		31.59
Outstanding, ending		367,998		24.46		407,763		22.24		426,913		20.14
Exercisable, ending		318,266				354,899				365,084
Weighted average fair value per option granted	$	10.85			$	10.07			$	11.29

Summary of options outstanding

	Options Outstanding
		Weighted			Options Exercisable
		Average	Weighted			Weighted
		Remaining	Average			Average
Range of	Number	Contractual	Exercise		Number	Exercise
Exercise Prices	Outstanding	Life	Price		Exercisable	Price
$9.30	29,406	0.08	$	9.30	29,406	$	9.30
$15.50 to $15.65	64,106	1.25		15.64	64,066		15.64
$17.10 to $18.00	110,499	2.57		17.31	110,459		17.31
$22.64 to $29.77	55,216	4.20		22.83	53,716		22.64
$36.00 to $41.95	37,834	7.66		38.25	14,360		37.84
$42.65 to $48.50	70,937	6.59		43.78	46,259		43.84
	367,998				318,266

Summary of changes in nonvested restricted stock awards

	December 31,
	2021		2020		2019
Outstanding, beginning		102,489		106,826		64,099
Granted*		38,360		34,559		85,961
Released		(43,691)		(37,296)		(37,624)
Forfeited		(51)		(1,600)		(5,610)
Outstanding, ending		97,107		102,489		106,826
Weighted average fair value per share granted	$	45.18	$	39.39	$	20.14

*  At December 31, 2021, includes 12,412 shares of restricted stock, 25,948 restricted stock units.

At December 31, 2020, includes 8,913 shares of restricted stock and 25,646 restricted stock units.

At December 31, 2019, includes 18,634 shares of restricted stock, 49,269 restricted stock units and 18,058 restricted stock units.

Schedule of Stock purchase plan

	2021		2020		2019
Shares granted		28,396		38,738		29,882
Shares purchased		30,543		37,114		28,775
Weighted average fair value per share granted	$	7.67	$	6.03	$	4.81