Note 13 - Employee Stock Plans (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Nonvested Restricted Stock Shares Activity [Table Text Block]

						Weighted
				Weighted		Average
				Average		Remaining
				Grant Date		Contractual
	Shares			Fair value		Term (in years)
Unvested at December 31, 2022		111,264		$	41.89		1.76
Granted		106,764		$	40.81		1.29
Vested		(79,592	)	$	44.47		-
Cancelled and forfeited		(178	)	$	34.74		-
Unvested at March 31, 2023		138,258		$	39.58		1.76
Expected to vest in the future at March 31, 2023		135,251		$	39.58		1.76