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Note 18 - Regulatory Capital Requirements and Restrictions on Dividends - Capital Requirements (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 19, 2022 shares | Feb. 13, 2020 shares | Dec. 31, 2023 USD ($) security shares | Dec. 31, 2022 USD ($) shares
Total risk-based capital, actual, amount |  |  | $ 1,171,047 | $ 1,055,177
Total risk-based capital, actual, ratio |  |  | 0.1429 | 0.1428
Total risk-based capital for capital adequacy purposes, amount |  |  | $ 655,461 | $ 591,132
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 |  |  | $ 860,293 | $ 775,861
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 |  |  | $ 819,327 | $ 738,915
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 |  |  | $ 841,052 | $ 734,977
Tier 1 risk-based capital, actual, ratio |  |  | 0.1027 | 0.0995
Tier 1 risk-based capital for capital adequacy purposes, amount |  |  | $ 491,596 | $ 443,349
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 |  |  | $ 696,428 | $ 628,078
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 |  |  | $ 655,461 | $ 591,132
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0800 | 0.0800
Tier 1 leverage, actual, amount |  |  | $ 841,052 | $ 734,977
Tier 1 leverage, actual, ratio |  |  | 0.1003 | 0.0961
Tier 1 leverage for capital adequacy purposes, amount |  |  | $ 335,420 | $ 305,959
Tier 1 leverage for capital adequacy purposes, ratio |  |  | 0.0400 | 0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 335,420 | $ 305,959
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 |  |  | $ 419,275 | $ 382,449
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0500 | 0.0500
Common equity Tier 1, actual, amount |  |  | $ 792,321 | $ 686,375
Common equity Tier 1, actual ratio |  |  | 0.0967 | 0.0929
Common equity Tier 1 for capital adequacy purposes, amount |  |  | $ 368,697 | $ 332,512
Common equity Tier 1 for capital adequacy purposes, ratio |  |  | 0.045% | 0.045%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 573,529 | $ 517,241
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio |  |  | 7.00% | 0.07%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount |  |  | $ 532,562 | $ 480,295
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio |  |  | 6.50% | 0.065%
The number of junior subordinated private placement debentures issued | security |  |  | 4 |
The number of junior subordinated private placement debentures assumed | security |  |  | 4 |
Percentage of outstanding shares under share repurchase program | 10.00% | 5.00% |  |
Shares repurchased | shares |  |  | 175,000 | 970,000
Number of shares remaining for repurchase | shares |  |  | 760,915 |
Maximum |  |  |  |
Shares repurchased authorized | shares | 1,500,000 | 800,000 |  |
QCBT |  |  |  |
Total risk-based capital, actual, amount |  |  | $ 300,413 | $ 275,337
Total risk-based capital, actual, ratio |  |  | 0.1267 | 0.1307
Total risk-based capital for capital adequacy purposes, amount |  |  | $ 189,707 | $ 168,588
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 |  |  | $ 248,990 | $ 221,272
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 |  |  | $ 237,133 | $ 210,735
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 |  |  | $ 270,744 | $ 248,978
Tier 1 risk-based capital, actual, ratio |  |  | 0.1142 | 0.1181
Tier 1 risk-based capital for capital adequacy purposes, amount |  |  | $ 142,280 | $ 126,441
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 |  |  | $ 201,563 | $ 179,125
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 |  |  | $ 189,707 | $ 168,588
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0800 | 0.0800
Tier 1 leverage, actual, amount |  |  | $ 270,744 | $ 248,978
Tier 1 leverage, actual, ratio |  |  | 0.1123 | 0.1101
Tier 1 leverage for capital adequacy purposes, amount |  |  | $ 96,425 | $ 90,419
Tier 1 leverage for capital adequacy purposes, ratio |  |  | 0.0400 | 0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 96,425 | $ 90,419
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 |  |  | $ 120,531 | $ 133,023
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0500 | 0.0500
Common equity Tier 1, actual, amount |  |  | $ 270,744 | $ 248,978
Common equity Tier 1, actual ratio |  |  | 0.1142 | 0.1181
Common equity Tier 1 for capital adequacy purposes, amount |  |  | $ 106,710 | $ 94,831
Common equity Tier 1 for capital adequacy purposes, ratio |  |  | 0.045% | 0.045%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 165,993 | $ 147,514
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio |  |  | 7.00% | 0.07%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount |  |  | $ 154,137 | $ 136,978
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio |  |  | 6.50% | 0.065%
CRBT |  |  |  |
Total risk-based capital, actual, amount |  |  | $ 381,514 | $ 308,153
Total risk-based capital, actual, ratio |  |  | 0.1560 | 0.1484
Total risk-based capital for capital adequacy purposes, amount |  |  | $ 195,687 | $ 166,168
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 |  |  | $ 256,840 | $ 218,096
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 |  |  | $ 244,609 | $ 207,711
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 |  |  | $ 354,940 | $ 282,258
Tier 1 risk-based capital, actual, ratio |  |  | 0.1451 | 0.1359
Tier 1 risk-based capital for capital adequacy purposes, amount |  |  | $ 146,766 | $ 124,626
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 |  |  | $ 207,918 | $ 176,554
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 |  |  | $ 195,687 | $ 166,168
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0800 | 0.0800
Tier 1 leverage, actual, amount |  |  | $ 354,940 | $ 282,258
Tier 1 leverage, actual, ratio |  |  | 0.1477 | 0.1317
Tier 1 leverage for capital adequacy purposes, amount |  |  | $ 96,093 | $ 85,707
Tier 1 leverage for capital adequacy purposes, ratio |  |  | 0.0400 | 0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 96,093 | $ 85,707
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 |  |  | $ 120,116 | $ 107,134
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0500 | 0.0500
Common equity Tier 1, actual, amount |  |  | $ 354,940 | $ 282,258
Common equity Tier 1, actual ratio |  |  | 0.1451 | 0.1359
Common equity Tier 1 for capital adequacy purposes, amount |  |  | $ 110,074 | $ 93,470
Common equity Tier 1 for capital adequacy purposes, ratio |  |  | 0.045% | 0.045%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 171,227 | $ 145,397
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio |  |  | 7.00% | 0.07%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount |  |  | $ 158,996 | $ 135,012
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio |  |  | 6.50% | 0.065%
CSB |  |  |  |
Total risk-based capital, actual, amount |  |  | $ 171,747 | $ 142,974
Total risk-based capital, actual, ratio |  |  | 0.1322 | 0.1204
Total risk-based capital for capital adequacy purposes, amount |  |  | $ 103,903 | $ 94,981
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 |  |  | $ 136,372 | $ 124,662
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 |  |  | $ 129,878 | $ 118,726
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 |  |  | $ 156,629 | $ 128,130
Tier 1 risk-based capital, actual, ratio |  |  | 0.1206 | 0.1079
Tier 1 risk-based capital for capital adequacy purposes, amount |  |  | $ 77,927 | $ 71,236
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 |  |  | $ 110,397 | $ 100,917
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 |  |  | $ 103,903 | $ 94,981
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0800 | 0.0800
Tier 1 leverage, actual, amount |  |  | $ 156,629 | $ 128,130
Tier 1 leverage, actual, ratio |  |  | 0.1119 | 0.1009
Tier 1 leverage for capital adequacy purposes, amount |  |  | $ 56,005 | $ 50,799
Tier 1 leverage for capital adequacy purposes, ratio |  |  | 0.0400 | 0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 56,005 | $ 50,799
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 |  |  | $ 70,007 | $ 63,499
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0500 | 0.0500
Common equity Tier 1, actual, amount |  |  | $ 156,629 | $ 128,130
Common equity Tier 1, actual ratio |  |  | 0.1206 | 0.1079
Common equity Tier 1 for capital adequacy purposes, amount |  |  | $ 58,445 | $ 53,427
Common equity Tier 1 for capital adequacy purposes, ratio |  |  | 0.045% | 0.045%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 90,915 | $ 83,108
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio |  |  | 7.00% | 0.07%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount |  |  | $ 84,421 | $ 77,172
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio |  |  | 6.50% | 0.065%
Guaranty Bank |  |  |  |
Total risk-based capital, actual, amount |  |  | $ 267,822 | $ 243,106
Total risk-based capital, actual, ratio |  |  | 0.1268 | 0.1224
Total risk-based capital for capital adequacy purposes, amount |  |  | $ 168,967 | $ 158,903
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 |  |  | $ 221,770 | $ 208,560
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 |  |  | $ 211,209 | $ 198,629
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 |  |  | $ 244,506 | $ 218,647
Tier 1 risk-based capital, actual, ratio |  |  | 0.1158 | 0.1101
Tier 1 risk-based capital for capital adequacy purposes, amount |  |  | $ 126,726 | $ 119,177
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 |  |  | $ 179,528 | $ 168,834
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 |  |  | $ 168,967 | $ 158,903
Tier 1 risk-based capital to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0800 | 0.0800
Tier 1 leverage, actual, amount |  |  | $ 244,506 | $ 218,647
Tier 1 leverage, actual, ratio |  |  | 0.1141 | 0.1090
Tier 1 leverage for capital adequacy purposes, amount |  |  | $ 85,688 | $ 80,229
Tier 1 leverage for capital adequacy purposes, ratio |  |  | 0.0400 | 0.0400
Tier 1 leverage for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 85,688 | $ 80,229
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 |  |  | $ 107,110 | $ 100,286
Tier 1 leverage to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.0500 | 0.0500
Common equity Tier 1, actual, amount |  |  | $ 244,506 | $ 218,647
Common equity Tier 1, actual ratio |  |  | 0.1158 | 0.1101
Common equity Tier 1 for capital adequacy purposes, amount |  |  | $ 95,044 | $ 89,383
Common equity Tier 1 for capital adequacy purposes, ratio |  |  | 0.045% | 0.045%
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, amount |  |  | $ 147,847 | $ 139,040
Common equity Tier 1 for capital adequacy purposes with capital conservation buffer, ratio |  |  | 7.00% | 0.07%
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, amount |  |  | $ 137,286 | $ 129,109
Common equity Tier 1 to be well capitalized under prompt corrective action provisions, ratio |  |  | 0.065% | 0.065%

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- Definition Amount of Tier 1 leverage capital as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 + Details
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