NOTE 8 - BUSINESS SEGMENT INFORMATION - Selected Financial Information on the Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Total revenue	$ 71,054	$ 64,178
Net interest income	41,975	37,698
Provision for credit losses	6,713	8,367
Net income (loss) from continuing operations	17,982	11,228
Goodwill	74,066	74,248	$ 74,066
Intangibles	10,873	14,421	11,381
Total assets	5,645,147	5,232,075	$ 5,682,797
Intersegment Eliminations [Member]
Total revenue	(122)	(15,715)
Net interest income	248	230
Net income (loss) from continuing operations	(22,857)	(15,255)
Total assets	(955,277)	(670,632)
Commercial Banking | QCBT | Operating Segments [Member]
Total revenue	21,284	21,686
Net interest income	15,786	14,428
Provision for credit losses	2,112	3,183
Net income (loss) from continuing operations	7,164	5,725
Goodwill	3,223	3,223
Total assets	2,101,634	1,914,785
Commercial Banking | CRBT | Operating Segments [Member]
Total revenue	30,357	22,879
Net interest income	13,606	11,386
Provision for credit losses	2,184	2,250
Net income (loss) from continuing operations	11,396	6,461
Goodwill	14,980	14,980
Intangibles	2,067	2,560
Total assets	1,847,070	1,719,773
Commercial Banking | CSB | Operating Segments [Member]
Total revenue	10,423	10,221
Net interest income	8,368	7,500
Provision for credit losses	1,366	1,964
Net income (loss) from continuing operations	2,062	1,065
Goodwill	9,888	9,888
Intangibles	3,143	3,812
Total assets	1,041,861	863,903
Commercial Banking | SFCB | Operating Segments [Member]
Total revenue	8,746	8,691
Net interest income	6,069	5,642
Provision for credit losses	1,051	970
Net income (loss) from continuing operations	2,269	2,207
Goodwill	45,975	45,975
Intangibles	5,663	6,573
Total assets	818,605	708,735
Other Segments | Operating Segments [Member]
Total revenue	366	16,416
Net interest income	(2,102)	(1,488)
Net income (loss) from continuing operations	17,948	11,025
Goodwill		182
Intangibles		1,476
Total assets	$ 791,254	$ 695,511