Note 6 - Stock Offering (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Sep. 25, 2023	Dec. 23, 2023	Dec. 24, 2022	Mar. 25, 2023
Common Stock, Shares, Issued (in shares)		8,828,515		7,562,604
Proceeds from Issuance of Common Stock	$ 80,500
Proceeds From Issuance of Common Stock, Net	$ 75,200	$ 75,714	$ 503
The Offering [Member]
Shares Issued, Price Per Share (in dollars per share)	$ 95
Common Stock, Shares, Issued (in shares)	847,371
Shares, Issued (in shares)	110,526