Note 7 - Stock Plans (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

	June 30, 2024					June 30, 2023
				Weighted-					Weighted-
	Shares			average grant		Shares			average grant
	granted			date fair value		granted			date fair value
Omnibus plan		10,000	(2)	$	46.96		18,000	(2)	$	49.43
Omnibus plan		1,558	(2)		46.96		17,684	(3)		49.43
Omnibus plan		10,871	(3)		46.96		50	(1)		49.43
Omnibus plan		50	(1)		46.96		1,000	(3)		44.06
Total		22,479		$	46.96		36,734		$	49.28

Nonvested Restricted Stock Shares Activity [Table Text Block]

	2012 & 2022 Stock incentive plans
	Director			Omnibus			Total			Weighted- average grant date fair value
Non-vested balance at December 31, 2023		12,519			61,200			73,719		$	50.03
Granted		-			22,479			22,479			46.96
Forfeited		-			(579	)		(579	)		48.97
Vested		(7,719	)		(17,585	)		(25,304	)		51.05
Non-vested balance at June 30, 2024		4,800			65,515			70,315		$	48.69

Share-Based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block]

	Awards		Weighted-average grant date fair value		Weighted-average remaining contractual term (years)
Outstanding December 31, 2023		64,326	$	11.59		3.8
Granted		-
Exercised		-
Forfeited		-
Outstanding June 30, 2024		64,326	$	11.59		3.3

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

	Three months ended June 30,				Six months ended June 30,
(dollars in thousands)	2024		2023		2024		2023
Stock-based compensation expense:
2012 Director stock incentive plan	$	60	$	173	$	139	$	287
2012 Omnibus stock incentive plan		61		118		149		259
2022 Omnibus stock incentive plan		218		227		384		383
Employee stock purchase plan		-		-		126		34
Total stock-based compensation expense	$	339	$	518	$	798	$	963

Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block]

	As of
(dollars in thousands)	June 30, 2024
Unrecognized stock-based compensation expense:
2012 Director stock incentive plan	$	151
2012 Omnibus stock incentive plan		153
2022 Omnibus stock incentive plan		1,781
Total unrecognized stock-based compensation expense	$	2,085