NOTE 9 - REGULATORY CAPITAL REQUIREMENTS - Capital Requirements (Details) $ in Thousands	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Total risk-based capital, actual, amount	$ 700,831	$ 581,234
Total risk-based capital, actual, ratio	0.1493	0.1333
Total risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 375,643	$ 348,937
Total risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	8.00%	8.00%
Total risk-based capital for capital adequacy purposes, amount	$ 493,031	$ 457,980
Total risk-based capital for capital adequacy purposes, ratio	0.1050	0.10500
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 469,553	$ 436,171
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	10.00
Tier 1 risk-based capital, actual, amount	$ 528,228	$ 481,702
Tier 1 risk-based capital, actual, ratio	0.1125	0.1104
Tier 1 risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 281,732	$ 261,703
Tier 1 risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	6.00%	6.00%
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 399,120	$ 370,746
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0850	0.08500
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 375,643	$ 348,937
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	8.00
Tier 1 leverage, actual, amount	$ 528,228	$ 481,702
Tier 1 leverage, actual, ratio	0.0921	0.0953
Tier 1 leverage for capital adequacy purposes, amount, without capital conservation buffer	$ 229,457	$ 202,207
Tier 1 leverage for capital adequacy purposes, ratio, without capital conservation buffer	4.00%	4.00%
Tier 1 leverage for capital adequacy purposes, amount	$ 229,457	$ 202,207
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.04000
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 286,822	$ 252,758
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	5.00
Common equity Tier 1, actual, amount	$ 490,273	$ 443,864
Common equity Tier 1, actual ratio	0.1044	0.1018
Common equity Tier 1 for capital adequacy purposes, amount, without capital conservation buffer	$ 211,299	$ 196,277
Common equity Tier 1 for capital adequacy purposes, ratio, without capital conservation buffer	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes, amount	$ 328,687	$ 305,320
Common equity Tier 1 for capital adequacy purposes, ratio	0.07%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 305,210	$ 283,511
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
QCBT
Total risk-based capital, actual, amount	$ 204,284	$ 183,855
Total risk-based capital, actual, ratio	0.1213	0.1183
Total risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 134,760	$ 124,362
Total risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	8.00%	8.00%
Total risk-based capital for capital adequacy purposes, amount	$ 176,872	$ 163,225
Total risk-based capital for capital adequacy purposes, ratio	0.1050	0.10500
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 168,450	$ 155,452
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	10.00
Tier 1 risk-based capital, actual, amount	$ 183,131	$ 170,137
Tier 1 risk-based capital, actual, ratio	0.1087	0.1094
Tier 1 risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 101,070	$ 93,271
Tier 1 risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	6.00%	6.00%
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 143,182	$ 132,134
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0850	0.08500
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 134,760	$ 124,362
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	8.00
Tier 1 leverage, actual, amount	$ 183,131	$ 170,137
Tier 1 leverage, actual, ratio	0.0785	0.0994
Tier 1 leverage for capital adequacy purposes, amount, without capital conservation buffer	$ 93,313	$ 68,479
Tier 1 leverage for capital adequacy purposes, ratio, without capital conservation buffer	4.00%	4.00%
Tier 1 leverage for capital adequacy purposes, amount	$ 93,313	$ 68,479
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.04000
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 116,642	$ 85,598
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	5.00
Common equity Tier 1, actual, amount	$ 183,131	$ 170,137
Common equity Tier 1, actual ratio	0.1087	0.1094
Common equity Tier 1 for capital adequacy purposes, amount, without capital conservation buffer	$ 75,802	$ 69,953
Common equity Tier 1 for capital adequacy purposes, ratio, without capital conservation buffer	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes, amount	$ 117,915	$ 108,817
Common equity Tier 1 for capital adequacy purposes, ratio	0.07%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 109,492	$ 101,044
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
CRBT
Total risk-based capital, actual, amount	$ 214,219	$ 175,498
Total risk-based capital, actual, ratio	0.1292	0.1190
Total risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 132,656	$ 117,953
Total risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	8.00%	8.00%
Total risk-based capital for capital adequacy purposes, amount	$ 174,112	$ 154,813
Total risk-based capital for capital adequacy purposes, ratio	0.1050	0.10500
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 165,821	$ 147,441
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	10.00
Tier 1 risk-based capital, actual, amount	$ 193,384	$ 162,127
Tier 1 risk-based capital, actual, ratio	0.1166	0.1100
Tier 1 risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 99,492	$ 88,465
Tier 1 risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	6.00%	6.00%
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 140,948	$ 125,325
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0850	0.08500
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 132,656	$ 117,953
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	8.00
Tier 1 leverage, actual, amount	$ 193,384	$ 162,127
Tier 1 leverage, actual, ratio	0.0972	0.1041
Tier 1 leverage for capital adequacy purposes, amount, without capital conservation buffer	$ 79,559	$ 62,286
Tier 1 leverage for capital adequacy purposes, ratio, without capital conservation buffer	4.00%	4.00%
Tier 1 leverage for capital adequacy purposes, amount	$ 79,559	$ 62,286
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.04000
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 99,449	$ 77,857
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	5.00
Common equity Tier 1, actual, amount	$ 193,384	$ 162,127
Common equity Tier 1, actual ratio	0.1166	0.1100
Common equity Tier 1 for capital adequacy purposes, amount, without capital conservation buffer	$ 74,619	$ 66,349
Common equity Tier 1 for capital adequacy purposes, ratio, without capital conservation buffer	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes, amount	$ 116,074	$ 103,209
Common equity Tier 1 for capital adequacy purposes, ratio	0.07%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 107,783	$ 95,837
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
CSB
Total risk-based capital, actual, amount	$ 99,123	$ 92,095
Total risk-based capital, actual, ratio	0.1274	0.1232
Total risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 62,222	$ 59,813
Total risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	8.00%	8.00%
Total risk-based capital for capital adequacy purposes, amount	$ 81,666	$ 78,504
Total risk-based capital for capital adequacy purposes, ratio	0.1050	0.10500
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 77,777	$ 74,766
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	10.00
Tier 1 risk-based capital, actual, amount	$ 89,359	$ 85,437
Tier 1 risk-based capital, actual, ratio	0.1149	0.1143
Tier 1 risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 46,666	$ 44,860
Tier 1 risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	6.00%	6.00%
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 66,110	$ 63,551
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0850	0.08500
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 62,222	$ 59,813
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	8.00
Tier 1 leverage, actual, amount	$ 89,359	$ 85,437
Tier 1 leverage, actual, ratio	0.0985	0.1039
Tier 1 leverage for capital adequacy purposes, amount, without capital conservation buffer	$ 36,273	$ 32,902
Tier 1 leverage for capital adequacy purposes, ratio, without capital conservation buffer	4.00%	4.00%
Tier 1 leverage for capital adequacy purposes, amount	$ 36,273	$ 32,902
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.04000
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 45,341	$ 41,128
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	5.00
Common equity Tier 1, actual, amount	$ 89,359	$ 85,437
Common equity Tier 1, actual ratio	0.1149	0.1143
Common equity Tier 1 for capital adequacy purposes, amount, without capital conservation buffer	$ 35,000	$ 33,645
Common equity Tier 1 for capital adequacy purposes, ratio, without capital conservation buffer	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes, amount	$ 54,444	$ 52,336
Common equity Tier 1 for capital adequacy purposes, ratio	0.07%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 50,555	$ 48,598
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
SFCB
Total risk-based capital, actual, amount	$ 83,283	$ 71,074
Total risk-based capital, actual, ratio	0.1368	0.1272
Total risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 48,718	$ 44,704
Total risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	8.00%	8.00%
Total risk-based capital for capital adequacy purposes, amount	$ 63,943	$ 58,674
Total risk-based capital for capital adequacy purposes, ratio	0.1050	0.10500
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 60,898	$ 55,880
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	10.00
Tier 1 risk-based capital, actual, amount	$ 71,617	$ 63,956
Tier 1 risk-based capital, actual, ratio	0.1176	0.1145
Tier 1 risk-based capital for capital adequacy purposes, amount, without capital conservation buffer	$ 36,539	$ 33,528
Tier 1 risk-based capital for capital adequacy purposes, ratio, without capital conservation buffer	6.00%	6.00%
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 51,763	$ 47,498
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0850	0.08500
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 48,718	$ 44,704
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	8.00
Tier 1 leverage, actual, amount	$ 71,617	$ 63,956
Tier 1 leverage, actual, ratio	0.1027	0.0970
Tier 1 leverage for capital adequacy purposes, amount, without capital conservation buffer	$ 27,903	$ 26,379
Tier 1 leverage for capital adequacy purposes, ratio, without capital conservation buffer	4.00%	4.00%
Tier 1 leverage for capital adequacy purposes, amount	$ 27,903	$ 26,379
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.04000
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 34,879	$ 32,974
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	5.00
Common equity Tier 1, actual, amount	$ 71,617	$ 63,956
Common equity Tier 1, actual ratio	0.1176	0.1145
Common equity Tier 1 for capital adequacy purposes, amount, without capital conservation buffer	$ 27,404	$ 25,146
Common equity Tier 1 for capital adequacy purposes, ratio, without capital conservation buffer	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes, amount	$ 42,629	$ 39,116
Common equity Tier 1 for capital adequacy purposes, ratio	0.07%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 39,584	$ 36,322
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%