XML 50 R39.htm IDEA: XBRL DOCUMENT
v3.26.1

Loans and Allowance for Credit Losses - Summary of an Age Analysis of Past Due Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | $ 4,215,122 | $ 3,756,829
90 Days or More Past Due and Still Accruing | 38,499 | 33,144
Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) | (6,852) | (7,298)
Loans receivable | 4,208,270 | 3,749,531
30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 69,490 | 70,683
90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 71,569 | 43,739
Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 141,059 | 114,422
Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4,074,063 | 3,642,407
Construction, land and land development loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable |  |
90 Days or More Past Due and Still Accruing |  |
Construction, land and land development loans | 30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable |  |
Construction, land and land development loans | 90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable |  |
Construction, land and land development loans | Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable |  |
Construction, land and land development loans | Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable |  |
Real Estate Portfolio Segment | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Loans receivable | 199,530 | 202,293
Real Estate Portfolio Segment | Commercial real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Loans receivable | 1,319,798 | 1,285,856
Consumer and other loans: |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,682,710 | 1,328,461
Loans receivable | 10,760 | 14,072
Community Bank |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,988,826 | 1,948,735
90 Days or More Past Due and Still Accruing | 0 | 0
Community Bank | 30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 293 | 544
Community Bank | 90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4,428 | 6,414
Community Bank | Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4,721 | 6,958
Community Bank | Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,984,105 | 1,941,777
Community Bank | Commercial and industrial loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 237,176 | 224,439
90 Days or More Past Due and Still Accruing | 0 | 0
Community Bank | Commercial and industrial loans | 30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 119 | 150
Community Bank | Commercial and industrial loans | 90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 84 | 2,070
Community Bank | Commercial and industrial loans | Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 203 | 2,220
Community Bank | Commercial and industrial loans | Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 236,973 | 222,219
Community Bank | Construction, land and land development loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 221,562 | 222,075
90 Days or More Past Due and Still Accruing | 0 | 0
Community Bank | Construction, land and land development loans | 30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
Community Bank | Construction, land and land development loans | 90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
Community Bank | Construction, land and land development loans | Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
Community Bank | Construction, land and land development loans | Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 221,562 | 222,075
Community Bank | Real Estate Portfolio Segment | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 199,530 | 202,293
90 Days or More Past Due and Still Accruing | 0 | 0
Community Bank | Real Estate Portfolio Segment | Commercial real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,319,798 | 1,285,856
90 Days or More Past Due and Still Accruing | 0 | 0
Community Bank | Real Estate Portfolio Segment | 30-89 Days Past Due | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 64 | 286
Community Bank | Real Estate Portfolio Segment | 30-89 Days Past Due | Commercial real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 106 | 107
Community Bank | Real Estate Portfolio Segment | 90 Days or More Past Due | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
Community Bank | Real Estate Portfolio Segment | 90 Days or More Past Due | Commercial real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4,344 | 4,344
Community Bank | Real Estate Portfolio Segment | Total Past Due | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 64 | 286
Community Bank | Real Estate Portfolio Segment | Total Past Due | Commercial real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4,450 | 4,451
Community Bank | Real Estate Portfolio Segment | Current | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 199,466 | 202,007
Community Bank | Real Estate Portfolio Segment | Current | Commercial real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,315,348 | 1,281,405
Community Bank | Consumer and other loans: |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 10,760 | 14,072
90 Days or More Past Due and Still Accruing | 0 | 0
Community Bank | Consumer and other loans: | 30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4 | 1
Community Bank | Consumer and other loans: | 90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
Community Bank | Consumer and other loans: | Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 4 | 1
Community Bank | Consumer and other loans: | Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 10,756 | 14,071
CCBX |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 2,226,296 | 1,808,094
90 Days or More Past Due and Still Accruing | 38,499 | 33,144
CCBX | 30-89 Days Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 69,197 | 70,139
CCBX | 90 Days or More Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 67,141 | 37,325
CCBX | Total Past Due |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 136,338 | 107,464
CCBX | Current |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 2,089,958 | 1,700,630
CCBX | Commercial and industrial loans | Capital call lines |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 204,835 | 210,480
90 Days or More Past Due and Still Accruing | 0 | 0
CCBX | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 24,638 | 19,166
90 Days or More Past Due and Still Accruing | 504 | 654
CCBX | Commercial and industrial loans | 30-89 Days Past Due | Capital call lines |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
CCBX | Commercial and industrial loans | 30-89 Days Past Due | CCBX Other Commercial and Industrial Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 753 | 1,075
CCBX | Commercial and industrial loans | 90 Days or More Past Due | Capital call lines |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
CCBX | Commercial and industrial loans | 90 Days or More Past Due | CCBX Other Commercial and Industrial Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 504 | 654
CCBX | Commercial and industrial loans | Total Past Due | Capital call lines |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 0 | 0
CCBX | Commercial and industrial loans | Total Past Due | CCBX Other Commercial and Industrial Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,257 | 1,729
CCBX | Commercial and industrial loans | Current | Capital call lines |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 204,835 | 210,480
CCBX | Commercial and industrial loans | Current | CCBX Other Commercial and Industrial Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 23,381 | 17,437
CCBX | Real Estate Portfolio Segment | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 324,873 | 264,059
90 Days or More Past Due and Still Accruing | 1,446 | 1,961
CCBX | Real Estate Portfolio Segment | 30-89 Days Past Due | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 2,475 | 3,125
CCBX | Real Estate Portfolio Segment | 90 Days or More Past Due | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 1,446 | 1,961
CCBX | Real Estate Portfolio Segment | Total Past Due | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 3,921 | 5,086
CCBX | Real Estate Portfolio Segment | Current | Residential real estate loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 320,952 | 258,973
CCBX | Consumer and other loans: |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 918,779 | 691,708
CCBX | Consumer and other loans: | Credit cards |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 753,171 | 622,681
90 Days or More Past Due and Still Accruing | 27,077 | 22,536
CCBX | Consumer and other loans: | Other Consumer and Other Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 918,779 | 691,708
90 Days or More Past Due and Still Accruing | 9,472 | 7,993
CCBX | Consumer and other loans: | 30-89 Days Past Due | Credit cards |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 30,450 | 27,752
CCBX | Consumer and other loans: | 30-89 Days Past Due | Other Consumer and Other Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 35,519 | 38,187
CCBX | Consumer and other loans: | 90 Days or More Past Due | Credit cards |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 32,862 | 26,632
CCBX | Consumer and other loans: | 90 Days or More Past Due | Other Consumer and Other Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 32,329 | 8,078
CCBX | Consumer and other loans: | Total Past Due | Credit cards |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 63,312 | 54,384
CCBX | Consumer and other loans: | Total Past Due | Other Consumer and Other Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 67,848 | 46,265
CCBX | Consumer and other loans: | Current | Credit cards |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | 689,859 | 568,297
CCBX | Consumer and other loans: | Current | Other Consumer and Other Loans |  |
Financing Receivable Recorded Investment Past Due [Line Items] |  |
Gross loans receivable | $ 850,931 | $ 645,443

X
- Definition Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(e)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 12: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 14: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 15: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 16: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 18: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 19: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 20: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481598/310-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-4 Reference 6: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 3 -SubTopic 20 -Topic 310 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481569/310-20-50-3 + Details
Name: | us-gaap_FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=ck1437958_FinancialAsset30To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=ck1437958_ConstructionLandAndLandDevelopmentPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=ck1437958_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ck1437958_ResidentialRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ck1437958_CommercialRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=ck1437958_ConsumerAndOtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck1437958_CommunityBankSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck1437958_CCBXSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ck1437958_CCBXCapitalCallLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ck1437958_CCBXOtherCommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CreditCardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ck1437958_OtherConsumerAndOtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |