Note 8 - Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended
	Mar. 11, 2021	Mar. 11, 2021	Mar. 08, 2021	Mar. 26, 2022	Mar. 27, 2021	Oct. 28, 2021
Proceeds from Issuance of Common Stock				$ 0	$ 223,118
Stock Repurchase Program, Authorized Amount						$ 70,000
Stock Repurchased During Period, Shares (in shares)				213,706
Stock Repurchased During Period, Value				$ 6,400
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 56,300
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