Note 9 - BUSINESS SEGMENT INFORMATION - Selected Financial Information on the Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Total revenue	$ 141,907	$ 120,059
Net interest income	54,699	56,810
Provision for loan/lease losses	2,969	3,928
Net income (loss) from continuing operations	26,726	27,157
Goodwill	139,027	138,474	$ 139,027
Intangibles	13,131	15,993	13,821
Total assets	8,599,549	8,036,904	$ 8,538,894
Intersegment Eliminations
Total revenue	(34,253)	(35,046)
Net interest income	348	344
Net income (loss) from continuing operations	(32,998)	(34,108)
Total assets	(1,451,510)	(1,258,826)
Commercial Banking | QCBT | Operating Segments
Total revenue	40,382	33,124
Net interest income	16,963	16,988
Provision for loan/lease losses	3,225	1,573
Net income (loss) from continuing operations	4,903	7,038
Goodwill	3,223	3,223
Total assets	2,618,727	2,548,473
Commercial Banking | CRBT | Operating Segments
Total revenue	47,975	43,123
Net interest income	16,908	17,179
Provision for loan/lease losses	(234)	1,516
Net income (loss) from continuing operations	18,043	16,400
Goodwill	14,980	14,980
Intangibles	819	1,108
Total assets	2,423,936	2,196,560
Commercial Banking | CSB | Operating Segments
Total revenue	20,509	16,568
Net interest income	11,075	10,890
Provision for loan/lease losses	186	492
Net income (loss) from continuing operations	4,449	4,760
Goodwill	9,888	9,888
Intangibles	1,289	1,878
Total assets	1,445,230	1,286,227
Commercial Banking | Guaranty Bank | Operating Segments
Total revenue	33,625	27,621
Net interest income	13,514	15,372
Provision for loan/lease losses	(208)	347
Net income (loss) from continuing operations	5,006	5,387
Goodwill	110,936	110,383
Intangibles	11,023	13,007
Total assets	2,327,985	2,147,776
Other Segments | Operating Segments
Total revenue	33,669	34,669
Net interest income	(4,109)	(3,963)
Net income (loss) from continuing operations	27,323	27,680
Total assets	$ 1,235,181	$ 1,116,694