Note 3 - Business Combinations - Schedule of Business Acquisition, Pro Forma Information (Details) - Metro Phoenix Bank [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net interest income after provision for credit losses	$ 118,367	$ 134,492	$ 107,172	$ 104,087
Noninterest income	121,765	88,510	112,755	151,499
Noninterest expense	203,542	186,020	166,476	178,337
Net income (after tax)	$ 28,159	$ 26,981	$ 40,784	$ 58,585