Note 11 - REGULATORY CAPITAL REQUIREMENTS - Capital Requirements (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Total risk-based capital, actual, amount	$ 1,031,057	$ 814,629
Total risk-based capital, actual, ratio	0.1438	0.1477
Total risk-based capital for capital adequacy purposes, amount	$ 573,558	$ 441,100
Total risk-based capital for capital adequacy purposes, ratio	0.0800	0.0800
Total risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 752,795	$ 578,944
Total risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.1050	0.1050
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 716,948	$ 551,375
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 risk-based capital, actual, amount	$ 708,601	$ 631,649
Tier 1 risk-based capital, actual, ratio	0.0988	0.1146
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 430,169	$ 330,825
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 609,406	$ 468,669
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.0850	0.0850
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 573,558	$ 441,100
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	0.0800
Tier 1 leverage, actual, amount	$ 708,601	$ 631,649
Tier 1 leverage, actual, ratio	0.0956	0.1046
Tier 1 leverage for capital adequacy purposes, amount	$ 296,423	$ 241,579
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount	$ 296,423	$ 241,579
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, ratio	0.0400	0.0400
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 370,528	$ 301,974
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	0.0500
Common equity Tier 1, actual, amount	$ 660,033	$ 593,494
Common equity Tier 1, actual ratio	0.0921	0.1076
Common equity Tier 1 for capital adequacy purposes, amount	$ 322,627	$ 248,119
Common equity Tier 1 for capital adequacy purposes, ratio	0.045%	4.50%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount	$ 501,864	$ 385,962
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio	7.00%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 466,016	$ 358,394
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	$ 267,060	$ 247,658
Total risk-based capital, actual, ratio	0.1298	0.1329
Total risk-based capital for capital adequacy purposes, amount	$ 164,649	$ 149,126
Total risk-based capital for capital adequacy purposes, ratio	0.0800	0.0800
Total risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 216,101	$ 195,727
Total risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.1050	0.1050
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 205,811	$ 186,407
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 risk-based capital, actual, amount	$ 241,281	$ 224,253
Tier 1 risk-based capital, actual, ratio	0.1172	0.1203
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 123,486	$ 111,844
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 174,939	$ 158,446
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.0850	0.0850
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 164,649	$ 149,126
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	0.0800
Tier 1 leverage, actual, amount	$ 241,281	$ 224,253
Tier 1 leverage, actual, ratio	0.1096	0.1045
Tier 1 leverage for capital adequacy purposes, amount	$ 88,058	$ 85,873
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount	$ 88,058	$ 85,873
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, ratio	0.0400	0.0400
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 110,072	$ 107,341
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	0.0500
Common equity Tier 1, actual, amount	$ 241,281	$ 224,253
Common equity Tier 1, actual ratio	0.1172	0.1203
Common equity Tier 1 for capital adequacy purposes, amount	$ 92,615	$ 83,883
Common equity Tier 1 for capital adequacy purposes, ratio	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount	$ 144,068	$ 130,485
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio	7.00%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 133,777	$ 121,164
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	$ 292,124	$ 277,673
Total risk-based capital, actual, ratio	0.1480	0.1485
Total risk-based capital for capital adequacy purposes, amount	$ 157,855	$ 149,595
Total risk-based capital for capital adequacy purposes, ratio	0.0800	0.0800
Total risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 207,185	$ 196,343
Total risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.1050	0.1050
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 197,319	$ 186,993
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 risk-based capital, actual, amount	$ 267,441	$ 254,279
Tier 1 risk-based capital, actual, ratio	0.1355	0.1360
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 118,391	$ 112,196
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 167,721	$ 158,944
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.0850	0.0850
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 157,855	$ 149,595
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	0.0800
Tier 1 leverage, actual, amount	$ 267,441	$ 254,279
Tier 1 leverage, actual, ratio	0.1320	0.1259
Tier 1 leverage for capital adequacy purposes, amount	$ 81,049	$ 80,777
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount	$ 81,049	$ 80,777
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, ratio	0.0400	0.0400
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 101,312	$ 100,971
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	0.0500
Common equity Tier 1, actual, amount	$ 267,441	$ 254,279
Common equity Tier 1, actual ratio	0.1355	0.1360
Common equity Tier 1 for capital adequacy purposes, amount	$ 88,794	$ 84,147
Common equity Tier 1 for capital adequacy purposes, ratio	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount	$ 138,123	$ 130,895
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio	7.00%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 128,257	$ 121,546
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	$ 137,056	$ 123,365
Total risk-based capital, actual, ratio	0.1169	0.1195
Total risk-based capital for capital adequacy purposes, amount	$ 93,787	$ 82,601
Total risk-based capital for capital adequacy purposes, ratio	0.0800	0.0800
Total risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 123,096	$ 108,413
Total risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.1050	0.1050
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 117,234	$ 103,251
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 risk-based capital, actual, amount	$ 122,387	$ 110,410
Tier 1 risk-based capital, actual, ratio	0.1044	0.1069
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 70,341	$ 61,951
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 99,649	$ 87,763
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.0850	0.0850
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 93,787	$ 82,601
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	0.0800
Tier 1 leverage, actual, amount	$ 122,387	$ 110,410
Tier 1 leverage, actual, ratio	0.0990	0.0967
Tier 1 leverage for capital adequacy purposes, amount	$ 49,457	$ 45,676
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount	$ 49,457	$ 45,676
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, ratio	0.0400	0.0400
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 61,821	$ 57,095
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	0.0500
Common equity Tier 1, actual, amount	$ 122,387	$ 110,410
Common equity Tier 1, actual ratio	0.1044	0.1069
Common equity Tier 1 for capital adequacy purposes, amount	$ 52,755	$ 46,463
Common equity Tier 1 for capital adequacy purposes, ratio	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount	$ 82,064	$ 72,276
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio	7.00%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 76,202	$ 67,113
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Guaranty Bank
Total risk-based capital, actual, amount	$ 231,638	$ 101,067
Total risk-based capital, actual, ratio	0.1184	0.1339
Total risk-based capital for capital adequacy purposes, amount	$ 156,513	$ 60,369
Total risk-based capital for capital adequacy purposes, ratio	0.0800	0.0800
Total risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 205,423	$ 79,235
Total risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.1050	0.1050
Total risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 195,641	$ 75,462
Total risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.1000	0.1000
Tier 1 risk-based capital, actual, amount	$ 207,174	$ 91,625
Tier 1 risk-based capital, actual, ratio	0.1059	0.1214
Tier 1 risk-based capital for capital adequacy purposes, amount	$ 117,385	$ 45,277
Tier 1 risk-based capital for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, amount	$ 166,295	$ 64,142
Tier 1 risk-based capital for capital adequacy purposes with capital conservation buffer, ratio	0.0850	0.0850
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, amount	$ 156,513	$ 60,369
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio	0.0800	0.0800
Tier 1 leverage, actual, amount	$ 207,174	$ 91,625
Tier 1 leverage, actual, ratio	0.1056	0.1108
Tier 1 leverage for capital adequacy purposes, amount	$ 78,491	$ 33,088
Tier 1 leverage for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount	$ 78,491	$ 33,088
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, ratio	0.0400	0.0400
Tier 1 leverage to be well capitalized under prompt corrective action provisions, amount	$ 98,113	$ 41,360
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio	0.0500	0.0500
Common equity Tier 1, actual, amount	$ 207,174	$ 91,625
Common equity Tier 1, actual ratio	0.1059	0.1214
Common equity Tier 1 for capital adequacy purposes, amount	$ 88,039	$ 33,958
Common equity Tier 1 for capital adequacy purposes, ratio	4.50%	4.50%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount	$ 136,949	$ 52,823
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio	7.00%	7.00%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount	$ 127,167	$ 49,050
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%