XML 69 R49.htm IDEA: XBRL DOCUMENT
v3.25.1

Loans - Schedule of Performance Loan Modifications (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | $ 28,535 | $ 2,060
Loans Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 9,282 | 1,139
Loans 30-59 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 1,920 | 0
Loans 60-89 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Loans Greater than 90 Days Past Due, Still Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Nonaccrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 17,333 | 921
Commercial and industrial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 17,917 | 283
Commercial and industrial | Loans Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 1,511 | 0
Commercial and industrial | Loans 30-59 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Commercial and industrial | Loans 60-89 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Commercial and industrial | Loans Greater than 90 Days Past Due, Still Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Commercial and industrial | Nonaccrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 16,406 | 283
Commercial real estate: | Non-owner occupied: |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 1,920 |
Commercial real estate: | Non-owner occupied: | Loans Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Commercial real estate: | Non-owner occupied: | Loans 30-59 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 1,920 |
Commercial real estate: | Non-owner occupied: | Loans 60-89 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Commercial real estate: | Non-owner occupied: | Loans Greater than 90 Days Past Due, Still Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Commercial real estate: | Non-owner occupied: | Nonaccrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Commercial real estate: | Owner occupied |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 7,000 | 1,777
Commercial real estate: | Owner occupied | Loans Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 7,000 | 1,139
Commercial real estate: | Owner occupied | Loans 30-59 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Commercial real estate: | Owner occupied | Loans 60-89 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Commercial real estate: | Owner occupied | Loans Greater than 90 Days Past Due, Still Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | 0
Commercial real estate: | Owner occupied | Nonaccrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 | $ 638
Owner occupied |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 8,920 |
Owner occupied | Loans Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 7,000 |
Owner occupied | Loans 30-59 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 1,920 |
Owner occupied | Loans 60-89 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Owner occupied | Loans Greater than 90 Days Past Due, Still Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Owner occupied | Nonaccrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Residential real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 1,698 |
Residential real estate | Loans Not Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 771 |
Residential real estate | Loans 30-59 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Residential real estate | Loans 60-89 Days Past Due |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Residential real estate | Loans Greater than 90 Days Past Due, Still Accruing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | 0 |
Residential real estate | Nonaccrual |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans, modified in period, amount | $ 927 |

X
- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-33 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
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=fcb_FinancialAssetNonaccrualMember
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_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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