Note 10 - Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

	Three Months Ended March 31, 2024							Year Ended December 31, 2023
	Common Stock Issued		Held in Treasury			Common Stock Outstanding		Common Stock Issued		Held in Treasury			Common Stock Outstanding
Shares, beginning of year		5,454,639		(81,584	)		5,373,055		5,434,521		(81,584	)		5,352,937
Stock-based compensation							—		20,118		—			20,118
Shares, end of period		5,454,639		(81,584	)		5,373,055		5,454,639		(81,584	)		5,373,055