Note 22 - Segments - Financial Information by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Net interest income	$ 62,376			$ 45,483			$ 168,120	$ 124,892
Provision for credit losses	4,803			(1,525)			6,882	1,147
All other non-interest income	15,712			10,486			39,117	27,012
Non-interest expenses	44,873			34,558			145,845	107,708
Income before income tax expense	37,564			30,064			81,400	63,283
Income tax expense	9,024			6,902			18,016	13,227
Net income	28,540	$ 26,902	$ 7,942	23,162	$ 4,184	$ 22,710	63,384	50,056
Less net income attributable to NCI	85			0			229	0
Net income attributable to stockholders	28,455			23,162			63,155	50,056
Segment assets	7,554,210			6,181,188			7,554,210	6,181,188	$ 6,646,025
Fiduciary and Trust [Member]
Wealth management and trust services	9,152			7,128			26,890	20,234
Commercial Banking [Member]
Net interest income	62,270			45,414			167,811	124,672
Provision for credit losses	4,803			(1,525)			6,882	1,147
All other non-interest income	15,712			10,486			39,117	27,012
Non-interest expenses	39,370			31,072			129,936	97,249
Income before income tax expense	33,809			26,353			70,110	53,288
Income tax expense	8,209			6,070			15,566	11,058
Net income	25,600			20,283			54,544	42,230
Less net income attributable to NCI	85			0			229	0
Net income attributable to stockholders	25,515			20,283			54,315	42,230
Segment assets	7,522,113			6,177,355			7,522,113	6,177,355
Commercial Banking [Member] | Fiduciary and Trust [Member]
Wealth management and trust services	0			0			0	0
Investment Management and Trust [Member]
Net interest income	106			69			309	220
Provision for credit losses	0			0			0	0
All other non-interest income	0			0			0	0
Non-interest expenses	5,503			3,486			15,909	10,459
Income before income tax expense	3,755			3,711			11,290	9,995
Income tax expense	815			832			2,450	2,169
Net income	2,940			2,879			8,840	7,826
Less net income attributable to NCI	0			0			0	0
Net income attributable to stockholders	2,940			2,879			8,840	7,826
Segment assets	32,097			3,833			32,097	3,833
Investment Management and Trust [Member] | Fiduciary and Trust [Member]
Wealth management and trust services	$ 9,152			$ 7,128			$ 26,890	$ 20,234