XML 66 R55.htm IDEA: XBRL DOCUMENT
v3.20.2

Allowance for Credit Losses (Troubled Debt Restructuring) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | $ 201,505 |  | $ 171,192
Nonaccruing | 197,791 | $ 168,717 | 121,689
Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 77,536
Commercial | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 2,766
Commercial | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 61,935
Commercial | Other commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 571
Commercial | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 11,839
Commercial | Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 425
Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 93,656
Consumer | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 3,882
Consumer | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 49,606 |  | 57,861
Consumer | Revolving mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 28,399
Consumer | Consumer and Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 3,514
Accruing |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 154,813 |  | 128,750
Accruing | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 61,627
Accruing | Commercial | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 487
Accruing | Commercial | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 50,819
Accruing | Commercial | Other commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 571
Accruing | Commercial | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 9,430
Accruing | Commercial | Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 320
Accruing | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 67,123
Accruing | Consumer | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 1,452
Accruing | Consumer | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 35,439 |  | 41,813
Accruing | Consumer | Revolving mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 21,032
Accruing | Consumer | Consumer and Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 2,826
Nonaccruing |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 46,692 |  | 42,442
Nonaccruing | Commercial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 15,909
Nonaccruing | Commercial | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 2,279
Nonaccruing | Commercial | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 11,116
Nonaccruing | Commercial | Other commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 0
Nonaccruing | Commercial | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 2,409
Nonaccruing | Commercial | Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 105
Nonaccruing | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring |  |  | 26,533
Nonaccruing | Consumer | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 2,430
Nonaccruing | Consumer | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 14,167 |  | 16,048
Nonaccruing | Consumer | Revolving mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 7,367
Nonaccruing | Consumer | Consumer and Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing |  |  | 688
Non-PCD Loans | Commercial | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 2,376 |  |
Non-PCD Loans | Commercial | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 47,762 |  |
Non-PCD Loans | Commercial | Other commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 7,656 |  |
Non-PCD Loans | Commercial | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 32,266 |  |
Non-PCD Loans | Commercial | Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 90,060 |  |
Non-PCD Loans | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 86,782 |  |
Non-PCD Loans | Consumer | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 2,785 |  |
Non-PCD Loans | Consumer | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 29,354 |  |
Non-PCD Loans | Consumer | Revolving mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 3,807 |  |
Non-PCD Loans | Consumer | Consumer and Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 1,230 |  |
Non-PCD Loans | Accruing | Commercial | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 1,072 |  |
Non-PCD Loans | Accruing | Commercial | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 35,080 |  |
Non-PCD Loans | Accruing | Commercial | Other commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 7,343 |  |
Non-PCD Loans | Accruing | Commercial | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 29,463 |  |
Non-PCD Loans | Accruing | Commercial | Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 72,958 |  |
Non-PCD Loans | Accruing | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 63,216 |  |
Non-PCD Loans | Accruing | Consumer | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 1,989 |  |
Non-PCD Loans | Accruing | Consumer | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 22,342 |  |
Non-PCD Loans | Accruing | Consumer | Revolving mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 2,355 |  |
Non-PCD Loans | Accruing | Consumer | Consumer and Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 1,091 |  |
Non-PCD Loans | Nonaccruing | Commercial | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 1,304 |  |
Non-PCD Loans | Nonaccruing | Commercial | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 12,682 |  |
Non-PCD Loans | Nonaccruing | Commercial | Other commercial real estate |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 313 |  |
Non-PCD Loans | Nonaccruing | Commercial | Commercial and industrial |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 2,803 |  |
Non-PCD Loans | Nonaccruing | Commercial | Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 17,102 |  |
Non-PCD Loans | Nonaccruing | Consumer |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 23,566 |  |
Non-PCD Loans | Nonaccruing | Consumer | Construction and land development |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 796 |  |
Non-PCD Loans | Nonaccruing | Consumer | Mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 7,012 |  |
Non-PCD Loans | Nonaccruing | Consumer | Revolving mortgage |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 1,452 |  |
Non-PCD Loans | Nonaccruing | Consumer | Consumer and Other |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Nonaccruing | 139 |  |
PCD Loans |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 24,663 |  | $ 17,200
PCD Loans | Accruing |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | 18,639 |  |
PCD Loans | Nonaccruing |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |
Troubled debt restructuring | $ 6,024 |  |

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 No definition available. + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_MortgageReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fcnca_OtherRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fcnca_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fcnca_OtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fcnca_ConsumerAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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