NOTE 7 - BUSINESS SEGMENT INFORMATION - Selected Financial Information on the Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Total revenue	$ 64,178	$ 64,095
Net interest income	37,698	36,908
Provision for loan/lease losses	8,367	2,134
Net income (loss)	11,228	12,918
Goodwill	74,248	77,872	$ 74,748
Intangibles	14,421	16,918	14,970
Total assets	5,232,075	5,066,662	$ 4,909,050
Intersegment Eliminations [Member]
Total revenue	(15,715)	(14,658)
Net interest income	230
Net income (loss)	(15,255)	(14,450)
Total assets	(670,632)	(601,432)
Commercial Banking | QCBT | Operating Segments [Member]
Total revenue	19,499	18,544
Net interest income	14,428	12,139
Provision for loan/lease losses	3,183	1,020
Net income (loss)	4,903	4,185
Goodwill	3,223	3,223
Total assets	1,914,785	1,660,374
Commercial Banking | CRBT | Operating Segments [Member]
Total revenue	21,995	19,244
Net interest income	11,386	10,407
Provision for loan/lease losses	2,250	425
Net income (loss)	6,377	5,100
Goodwill	14,980	14,980
Intangibles	2,560	3,061
Total assets	1,719,773	1,446,637
Commercial Banking | CSB | Operating Segments [Member]
Total revenue	10,051	9,270
Net interest income	7,500	6,966
Provision for loan/lease losses	1,964	150
Net income (loss)	1,038	2,157
Goodwill	9,888	9,888
Intangibles	3,812	4,501
Total assets	863,903	785,076
Commercial Banking | SFC Bank | Operating Segments [Member]
Total revenue	8,691	7,288
Net interest income	5,642	5,227
Provision for loan/lease losses	970	500
Net income (loss)	2,207	1,653
Goodwill	45,975	45,975
Intangibles	6,573	7,501
Total assets	708,735	638,542
Wealth Management Segment [Member] | Operating Segments [Member]
Total revenue	4,039	4,229
Net income (loss)	821	1,158
Other Segments | Operating Segments [Member]
Total revenue	15,618	20,178
Net interest income	(1,488)	2,169
Provision for loan/lease losses		39
Net income (loss)	11,137	13,115
Goodwill	182	3,806
Intangibles	1,476	1,855
Total assets	$ 695,511	$ 1,137,465