NOTE 2 - INVESTMENT SECURITIES - Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Securities HTM:
Securities HTM, Amortized Cost, Due in one year or less	$ 389
Securities HTM, Fair Value, Due in one year or less	390
Securities HTM, Amortized Cost, Due after one year through five years	42,078
Securities HTM, Fair Value, Due after one year through five years	41,754
Securities HTM, Amortized Cost, Due after five years	909,731
Securities HTM, Fair Value, Due after five years	798,596
Securities HTM, Amortized Cost	952,198	$ 948,958
Securities HTM, Fair Value	840,740	857,663
Securities AFS:
Securities AFS, Amortized Cost, Due in one year or less	1,425
Securities AFS, Fair Value, Due in one year or less	1,423
Securities AFS, Amortized Cost, Due after one year through five years	14,926
Securities AFS, Fair Value, Due after one year through five years	14,515
Securities AFS, Amortized Cost, Due after five years	228,968
Securities AFS, Fair Value, Due after five years	183,870
Securities AFS, Amortized Cost, Maturity Total	245,319
Securities AFS, Fair Value, Maturity Total	199,808
Securities AFS, Amortized Cost	340,215	326,752
Securities AFS, Fair Value	290,106	279,777
Callable Securities
Securities HTM:
Securities HTM, Amortized Cost, Callable of call options	229,823
Securities HTM, Fair Value, Callable of call options	224,863
Securities AFS:
Securities AFS, Amortized Cost	226,979
Securities AFS, Fair Value	183,251
Residential mortgage-backed and related securities
Securities AFS:
Securities AFS, Amortized Cost	90,911	72,951
Securities AFS, Fair Value	86,222	68,855
Securities AFS, Amortized Cost, Without Single Maturity	90,911
Securities AFS, Fair Value, Without Single Maturity	86,222
Asset-backed securities
Securities AFS:
Securities AFS, Amortized Cost	3,985	4,345
Securities AFS, Fair Value	4,076	4,439
Securities AFS, Amortized Cost, Without Single Maturity	3,985
Securities AFS, Fair Value, Without Single Maturity	4,076
Municipal securities
Securities HTM:
Securities HTM, Amortized Cost	920,855	918,189
Securities HTM, Fair Value	807,852	824,245
Securities AFS:
Securities AFS, Amortized Cost	203,399	203,613
Securities AFS, Fair Value	160,247	163,085
Municipal securities | Callable Securities
Securities HTM:
Securities HTM, Amortized Cost, Callable of call options	199,530
Securities HTM, Fair Value, Callable of call options	193,023
Securities AFS:
Securities AFS, Amortized Cost, Without Single Maturity	202,876
Securities AFS, Fair Value, Without Single Maturity	159,734
Corporate securities
Securities HTM:
Securities HTM, Amortized Cost	30,293	29,719
Securities HTM, Fair Value	31,840	32,370
Securities AFS:
Securities AFS, Amortized Cost	25,073	28,068
Securities AFS, Fair Value	24,502	$ 27,374
Corporate securities | Callable Securities
Securities HTM:
Securities HTM, Amortized Cost, Callable of call options	30,293
Securities HTM, Fair Value, Callable of call options	31,840
Securities AFS:
Securities AFS, Amortized Cost, Without Single Maturity	24,103
Securities AFS, Fair Value, Without Single Maturity	$ 23,517