Note 17 - Stockholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 30, 2024	Mar. 31, 2023
Beginning balance, loss, net of tax	$ 2,736,575	$ 2,736,575	$ 2,474,040
Total other comprehensive (loss)/income, net of tax		(6,863)	11,218
Ending balance, loss, net of tax	2,778,072	2,778,072	2,542,339
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Beginning balance, loss, net of tax	(86,190)	(86,190)	(104,832)
Net unrealized (losses)/gains arising during the period, pre-tax	(8,010)		13,552
Net unrealized (losses)/gains arising during the period, tax	(2,368)		4,006
Net unrealized (losses)/gains arising during the period, net of tax	(5,642)		9,546
Net unrealized (losses)/gains arising during the period, pre-tax	(1,107)		3,000
Reclassification adjustment for net losses/(gains) included in net income, tax	(327)		887
Reclassification adjustment for net losses/(gains) included in net income, net of tax	(780)		2,113
Total other comprehensive (loss)/income, pre-tax	(9,117)		16,552
Total other comprehensive (loss)/income, tax	(2,695)		4,893
Total other comprehensive (loss)/income, net of tax	(6,422)		11,659
Ending balance, loss, net of tax	(92,612)		(93,173)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Beginning balance, loss, net of tax	774	774	2,537
Net unrealized (losses)/gains arising during the period, pre-tax	(626)		(626)
Net unrealized (losses)/gains arising during the period, tax	(185)		(185)
Net unrealized (losses)/gains arising during the period, net of tax	(441)		(441)
Net unrealized (losses)/gains arising during the period, pre-tax	0		0
Reclassification adjustment for net losses/(gains) included in net income, tax	0		0
Reclassification adjustment for net losses/(gains) included in net income, net of tax	0		0
Total other comprehensive (loss)/income, pre-tax	(626)		(626)
Total other comprehensive (loss)/income, tax	(185)		(185)
Total other comprehensive (loss)/income, net of tax	(441)		(441)
Ending balance, loss, net of tax	333		2,096
AOCI Attributable to Parent [Member]
Beginning balance, loss, net of tax	(85,416)	(85,416)	(102,295)
Net unrealized (losses)/gains arising during the period, pre-tax	(8,636)		12,926
Net unrealized (losses)/gains arising during the period, tax	(2,553)		3,821
Net unrealized (losses)/gains arising during the period, net of tax	(6,083)		9,105
Net unrealized (losses)/gains arising during the period, pre-tax	(1,107)		3,000
Reclassification adjustment for net losses/(gains) included in net income, tax	(327)		887
Reclassification adjustment for net losses/(gains) included in net income, net of tax	(780)		2,113
Total other comprehensive (loss)/income, pre-tax	(9,743)		15,926
Total other comprehensive (loss)/income, tax	(2,880)		4,708
Total other comprehensive (loss)/income, net of tax	(6,863)	(6,863)	11,218
Ending balance, loss, net of tax	$ (92,279)	$ (92,279)	$ (91,077)