Note 9 - BUSINESS SEGMENT INFORMATION - Selected Financial Information on the Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Total revenue	$ 90,987		$ 68,199		$ 157,682	$ 139,253
Net interest income	59,400		43,516		105,133	85,491
Provision for credit losses	11,200				8,284	6,713
Net income (loss) from continuing operations	15,242	$ 23,624	22,349	$ 17,982	38,866	40,331
Goodwill	137,607		74,066		137,607	74,066	$ 74,066
Intangibles	18,333		10,365		18,333	10,365	9,349
Total assets	7,392,941		5,805,165		7,392,941	5,805,165	$ 6,096,132
Intersegment Eliminations [Member]
Total revenue	(27,005)		(102)		(56,073)	(224)
Net interest income	345		327		691	575
Net income (loss) from continuing operations	(26,452)		(26,589)		(54,984)	(49,446)
Total assets	(923,834)		(179,303)		(923,834)	(179,303)
Commercial Banking | QCBT | Operating Segments [Member]
Total revenue	23,722		21,676		46,202	42,960
Net interest income	18,540		16,152		35,854	31,938
Provision for credit losses	617		136		(642)	2,248
Net income (loss) from continuing operations	8,425		8,679		18,395	15,843
Goodwill	3,223		3,223		3,223	3,223
Total assets	2,122,852		2,059,634		2,122,852	2,059,634
Commercial Banking | CRBT | Operating Segments [Member]
Total revenue	31,715		26,498		56,926	56,855
Net interest income	15,093		14,005		29,416	27,611
Provision for credit losses	(165)		(692)		(936)	1,492
Net income (loss) from continuing operations	13,256		11,145		24,385	22,541
Goodwill	14,980		14,980		14,980	14,980
Intangibles	1,463		1,946		1,463	1,946
Total assets	1,985,198		1,913,761		1,985,198	1,913,761
Commercial Banking | CSB | Operating Segments [Member]
Total revenue	12,091		10,809		23,407	21,232
Net interest income	9,851		8,672		19,182	17,040
Provision for credit losses	100		756		(285)	2,122
Net income (loss) from continuing operations	3,374		3,109		7,500	5,171
Goodwill	9,888		9,888		9,888	9,888
Intangibles	2,340		2,979		2,340	2,979
Total assets	1,221,406		1,079,930		1,221,406	1,079,930
Commercial Banking | Guaranty Bank | Operating Segments [Member]
Total revenue	23,669		9,181		31,513	17,927
Net interest income	18,065		6,479		24,593	12,548
Provision for credit losses	10,648		(200)		10,147	851
Net income (loss) from continuing operations	1,027		3,685		4,131	5,954
Goodwill	109,516		45,975		109,516	45,975
Intangibles	14,530		5,440		14,530	5,440
Total assets	2,037,364		850,067		2,037,364	850,067
Other Segments | Operating Segments [Member]
Total revenue	26,795		137		55,707	503
Net interest income	(2,494)		(2,119)		(4,603)	(4,221)
Net income (loss) from continuing operations	15,612		22,320		39,439	40,268
Total assets	$ 949,955		$ 81,076		$ 949,955	$ 81,076