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Note 6 - Stock-based Compensation - Summary of Non-vested Restricted Stock Units (Details) - Performance-based Restricted Stock Units [Member]
shares in Thousands
Mar. 30, 2024
$ / shares
shares
October 2018 [Member]  
Total number of units outstanding (in shares) | shares 5
Grant date fair value per unit (in dollars per share) | $ / shares $ 20.81
July 2020 [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 54.21
September 2020, First Issuance [Member]  
Total number of units outstanding (in shares) | shares 10
Grant date fair value per unit (in dollars per share) | $ / shares $ 53.17
September 2020, Second Issuance [Member]  
Total number of units outstanding (in shares) | shares 4
Grant date fair value per unit (in dollars per share) | $ / shares $ 67.76
September 2020, Third Issuance [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 90.92
June 2021, First Issuance [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 90.41
June 2021, Second Issuance [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 76.31
September 2021 [Member]  
Total number of units outstanding (in shares) | shares 11
Grant date fair value per unit (in dollars per share) | $ / shares $ 63.17
January 2022, First Issuance [Member]  
Total number of units outstanding (in shares) | shares 12
Grant date fair value per unit (in dollars per share) | $ / shares $ 63.17
January 2022, Second Issuance [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 78.04
January 2022, Third Issuance [Member]  
Total number of units outstanding (in shares) | shares 5
Grant date fair value per unit (in dollars per share) | $ / shares $ 73.8
March 2022 [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 81.26
May 2022, First Issuance [Member]  
Total number of units outstanding (in shares) | shares 1
Grant date fair value per unit (in dollars per share) | $ / shares $ 67.48
May 2022, Second Issuance [Member]  
Total number of units outstanding (in shares) | shares 10
Grant date fair value per unit (in dollars per share) | $ / shares $ 89.7
August 2022 Issuance [Member]  
Total number of units outstanding (in shares) | shares 11
Grant date fair value per unit (in dollars per share) | $ / shares $ 89.7
September 2022 [Member]  
Total number of units outstanding (in shares) | shares 19
Grant date fair value per unit (in dollars per share) | $ / shares $ 89.7
December 2022 First Issuance [Member]  
Total number of units outstanding (in shares) | shares 6
Grant date fair value per unit (in dollars per share) | $ / shares $ 90.56
December 2022 Second Issuance [Member]  
Total number of units outstanding (in shares) | shares 4
Grant date fair value per unit (in dollars per share) | $ / shares $ 109.55