Note 8 - Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Mar. 11, 2021	Mar. 11, 2021	Mar. 08, 2021	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Oct. 25, 2022	May 04, 2022	May 03, 2022	Oct. 28, 2021
Proceeds from Issuance of Common Stock				$ 0	$ 223,119	$ 0
Stock Repurchase Program, Authorized Amount										$ 70,000
Stock Repurchase Program, Additional Authorized Amount							$ 70,000
Stock Repurchased During Period, Shares (in shares)				1,767,070	206,572
Stock Repurchased During Period, Value				$ 50,700	$ 7,300
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 82,000
Common Stock, Shares Authorized (in shares)				90,000,000	90,000,000			90,000,000	60,000,000
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)			4,950,000
Shares Issued, Price Per Share (in dollars per share)			$ 41.00
Proceeds from Issuance of Common Stock		$ 223,100
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)	742,500