Note 8 - BUSINESS SEGMENT INFORMATION - Selected Financial Information on the Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Total revenue	$ 66,695	$ 71,054
Net interest income	45,733	41,975
Provision for credit losses	(2,916)	6,713
Net income (loss) from continuing operations	23,624	17,982
Goodwill	74,066	74,066	$ 74,066
Intangibles	8,856	10,873	9,349
Total assets	6,175,819	5,645,147	$ 6,096,132
Intersegment Eliminations [Member]
Total revenue	(29,068)	(22,979)
Net interest income	346	248
Net income (loss) from continuing operations	(28,532)	(22,857)
Total assets	(948,227)	(955,277)
Commercial Banking | QCBT | Operating Segments [Member]
Total revenue	22,480	21,284
Net interest income	17,314	15,786
Provision for credit losses	(1,259)	2,112
Net income (loss) from continuing operations	9,970	7,164
Goodwill	3,223	3,223
Total assets	2,195,894	2,101,634
Commercial Banking | CRBT | Operating Segments [Member]
Total revenue	25,211	30,357
Net interest income	14,323	13,606
Provision for credit losses	(770)	2,184
Net income (loss) from continuing operations	11,129	11,396
Goodwill	14,980	14,980
Intangibles	1,583	2,067
Total assets	1,947,737	1,847,070
Commercial Banking | CSB | Operating Segments [Member]
Total revenue	11,316	10,423
Net interest income	9,331	8,368
Provision for credit losses	(385)	1,366
Net income (loss) from continuing operations	4,126	2,062
Goodwill	9,888	9,888
Intangibles	2,497	3,143
Total assets	1,184,708	1,041,861
Commercial Banking | SFCB | Operating Segments [Member]
Total revenue	7,844	8,746
Net interest income	6,528	6,069
Provision for credit losses	(502)	1,051
Net income (loss) from continuing operations	3,104	2,269
Goodwill	45,975	45,975
Intangibles	4,776	5,663
Total assets	956,345	818,605
Other Segments | Operating Segments [Member]
Total revenue	28,912	23,223
Net interest income	(2,109)	(2,102)
Net income (loss) from continuing operations	23,827	17,948
Total assets	$ 839,362	$ 791,254