Note 15 - Financial Derivatives (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

	September 30, 2023			December 31, 2022
	(In thousands)
Fair value swap hedges:
Notional	$	857,341		$	874,034
Weighted average fixed rate-pay		1.80	%		2.12	%
Weighted average variable rate spread		0.27	%		0.68	%
Weighted average variable rate-receive		5.33	%		2.61	%
Unrealized gain	$	27,378		$	38,589

	Three Months Ended				Nine Months Ended
	September 30, 2023		September 30, 2022		September 30, 2023		September 30, 2022
Periodic net settlement of swaps (1)	$	7,659	$	1,461	$	21,065	$	(1,628	)

Derivatives Not Designated as Hedging Instruments [Table Text Block]

Derivative financial instruments not designated as hedging instruments:	September 30, 2023			December 31, 2022
	(In thousands)
Notional amounts:
Forward, and swap contracts with positive fair value	$	862,838		$	72,996
Forward, and swap contracts with negative fair value	$	707,025		$	170,213
Fair value:
Forward, and swap contracts with positive fair value	$	56,858		$	448
Forward, and swap contracts with negative fair value	$	(56,939	)	$	(942	)