Note 8 - BUSINESS SEGMENT INFORMATION - Selected Financial Information on the Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Total revenue	$ 120,059	$ 66,695
Net interest income	56,810	45,733
Provision for credit losses	3,928	(2,916)
Net income (loss) from continuing operations	27,157	23,624
Goodwill	138,474	74,066	$ 137,607
Intangibles	15,993	8,856	16,759
Total assets	8,036,904	6,175,819	$ 7,948,837
Intersegment Eliminations [Member]
Total revenue	(35,046)	(29,068)
Net interest income	344	346
Net income (loss) from continuing operations	(34,108)	(28,532)
Total assets	(1,258,826)	(948,227)
Commercial Banking | QCBT | Operating Segments [Member]
Total revenue	33,124	22,480
Net interest income	16,988	17,314
Provision for credit losses	1,573	(1,259)
Net income (loss) from continuing operations	7,038	9,970
Goodwill	3,223	3,223
Total assets	2,548,473	2,195,894
Commercial Banking | CRBT | Operating Segments [Member]
Total revenue	43,123	25,211
Net interest income	17,179	14,323
Provision for credit losses	1,516	(770)
Net income (loss) from continuing operations	16,400	11,129
Goodwill	14,980	14,980
Intangibles	1,108	1,583
Total assets	2,196,560	1,947,737
Commercial Banking | CSB | Operating Segments [Member]
Total revenue	16,568	11,316
Net interest income	10,890	9,331
Provision for credit losses	492	(385)
Net income (loss) from continuing operations	4,760	4,126
Goodwill	9,888	9,888
Intangibles	1,878	2,497
Total assets	1,286,227	1,184,708
Commercial Banking | Guaranty Bank | Operating Segments [Member]
Total revenue	27,621	7,844
Net interest income	15,372	6,528
Provision for credit losses	347	(502)
Net income (loss) from continuing operations	5,387	3,104
Goodwill	110,383	45,975
Intangibles	13,007	4,776
Total assets	2,147,776	956,345
Other Segments | Operating Segments [Member]
Total revenue	34,669	28,912
Net interest income	(3,963)	(2,109)
Net income (loss) from continuing operations	27,680	23,827
Total assets	$ 1,116,694	$ 839,362