XML 98 R84.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Loans and Asset Quality Information - Schedule of Recorded Investment in Loans by Credit Quality Indicators (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | $ 2,380,302 |  |
2020 | 1,329,007 |  |
2019 | 637,027 |  |
2018 | 396,981 |  |
2017 | 317,729 |  |
Prior | 478,114 |  |
Revolving | 544,259 |  |
Total | 6,083,419 | $ 4,735,013 | $ 4,451,525
Unamortized net deferred loan (fees) costs | (1,704) | (3,698) | (1,941)
Loans | 6,081,715 | 4,731,315 | 4,453,466
Commercial, financial, and agricultural |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 648,997 | 782,549 | 504,271
Commercial, financial, and agricultural | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 648,997 | 782,412 |
Consumer loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 14,960 |  |
2020 | 25,508 |  |
2019 | 2,965 |  |
2018 | 1,730 |  |
2017 | 673 |  |
Prior | 550 |  |
Revolving | 10,852 |  |
Total | 57,238 | 53,955 | 56,172
Consumer loans | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 57,238 | 53,917 |
Commercial, financial, and agricultural |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 206,779 |  |
2020 | 140,588 |  |
2019 | 74,385 |  |
2018 | 76,470 |  |
2017 | 16,745 |  |
Prior | 17,597 |  |
Revolving | 116,433 |  |
Total | 648,997 |  |
Real estate – construction, land development & other land loans | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 575,195 |  |
2020 | 134,674 |  |
2019 | 74,208 |  |
2018 | 12,648 |  |
2017 | 9,882 |  |
Prior | 8,196 |  |
Revolving | 13,746 |  |
Total | 828,549 | 570,672 | 530,866
Real estate – construction, land development & other land loans | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 828,549 | 570,522 |
Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 242,926 |  |
2020 | 225,388 |  |
2019 | 121,148 |  |
2018 | 83,945 |  |
2017 | 87,050 |  |
Prior | 249,433 |  |
Revolving | 12,076 |  |
Total | 1,021,966 | 972,378 | 1,105,014
Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 1,021,966 | 968,151 |
Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 3,380 |  |
2020 | 595 |  |
2019 | 525 |  |
2018 | 1,304 |  |
2017 | 245 |  |
Prior | 2,275 |  |
Revolving | 323,608 |  |
Total | 331,932 | 306,256 | 337,922
Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 331,932 | 306,156 |
Real estate – mortgage – commercial and other | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 1,337,062 |  |
2020 | 802,254 |  |
2019 | 363,796 |  |
2018 | 220,884 |  |
2017 | 203,134 |  |
Prior | 200,063 |  |
Revolving | 67,544 |  |
Total | 3,194,737 | 2,049,203 | $ 1,917,280
Real estate – mortgage – commercial and other | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 3,194,737 | 2,045,264 |
Purchased credit impaired |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 8,591 |
Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 4,613,259 |
Pass | Commercial, financial, and agricultural | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 762,091 |
Pass | Consumer loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 14,960 |  |
2020 | 25,431 |  |
2019 | 2,965 |  |
2018 | 1,722 |  |
2017 | 673 |  |
Prior | 525 |  |
Revolving | 10,810 |  |
Total | 57,086 |  |
Pass | Consumer loans | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 53,488 |
Pass | Commercial, financial, and agricultural |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 204,945 |  |
2020 | 138,540 |  |
2019 | 71,369 |  |
2018 | 66,645 |  |
2017 | 16,009 |  |
Prior | 17,492 |  |
Revolving | 112,933 |  |
Total | 627,933 |  |
Pass | Real estate – construction, land development & other land loans | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 573,613 |  |
2020 | 133,888 |  |
2019 | 69,066 |  |
2018 | 12,455 |  |
2017 | 9,764 |  |
Prior | 8,190 |  |
Revolving | 13,737 |  |
Total | 820,713 |  |
Pass | Real estate – construction, land development & other land loans | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 560,845 |
Pass | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 241,619 |  |
2020 | 224,617 |  |
2019 | 120,097 |  |
2018 | 82,531 |  |
2017 | 86,074 |  |
Prior | 234,950 |  |
Revolving | 11,051 |  |
Total | 1,000,939 |  |
Pass | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 943,455 |
Pass | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 3,111 |  |
2020 | 498 |  |
2019 | 439 |  |
2018 | 1,304 |  |
2017 | 245 |  |
Prior | 1,649 |  |
Revolving | 317,319 |  |
Total | 324,565 |  |
Pass | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 297,795 |
Pass | Real estate – mortgage – commercial and other | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 1,328,156 |  |
2020 | 796,992 |  |
2019 | 355,885 |  |
2018 | 211,118 |  |
2017 | 197,165 |  |
Prior | 197,659 |  |
Revolving | 66,104 |  |
Total | 3,153,079 |  |
Pass | Real estate – mortgage – commercial and other | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 1,988,684 |
Pass | Purchased credit impaired |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 6,901 |
Special Mention Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 43,100 | 61,260 |
Special Mention Loans | Commercial, financial, and agricultural | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 9,553 |
Special Mention Loans | Consumer loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 0 |  |
2020 | 4 |  |
2019 | 0 |  |
2018 | 0 |  |
2017 | 0 |  |
Prior | 0 |  |
Revolving | 0 |  |
Total | 4 |  |
Special Mention Loans | Consumer loans | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 80 |
Special Mention Loans | Commercial, financial, and agricultural |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 225 |  |
2020 | 1,255 |  |
2019 | 1,313 |  |
2018 | 2,729 |  |
2017 | 225 |  |
Prior | 9 |  |
Revolving | 2,348 |  |
Total | 8,104 |  |
Special Mention Loans | Real estate – construction, land development & other land loans | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 41 |  |
2020 | 737 |  |
2019 | 5,095 |  |
2018 | 110 |  |
2017 | 104 |  |
Prior | 2 |  |
Revolving | 9 |  |
Total | 6,098 |  |
Special Mention Loans | Real estate – construction, land development & other land loans | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 7,877 |
Special Mention Loans | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 888 |  |
2020 | 615 |  |
2019 | 516 |  |
2018 | 229 |  |
2017 | 323 |  |
Prior | 3,237 |  |
Revolving | 94 |  |
Total | 5,902 |  |
Special Mention Loans | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 7,609 |
Special Mention Loans | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 194 |  |
2020 | 0 |  |
2019 | 15 |  |
2018 | 0 |  |
2017 | 0 |  |
Prior | 19 |  |
Revolving | 1,341 |  |
Total | 1,569 |  |
Special Mention Loans | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 1,468 |
Special Mention Loans | Real estate – mortgage – commercial and other | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 1,759 |  |
2020 | 4,849 |  |
2019 | 5,801 |  |
2018 | 3,741 |  |
2017 | 2,072 |  |
Prior | 1,801 |  |
Revolving | 1,440 |  |
Total | 21,463 |  |
Special Mention Loans | Real estate – mortgage – commercial and other | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 34,588 |
Special Mention Loans | Purchased credit impaired |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 85 |
Classified |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total | 56,000 |  |
Classified | Consumer loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 0 |  |
2020 | 73 |  |
2019 | 0 |  |
2018 | 8 |  |
2017 | 0 |  |
Prior | 25 |  |
Revolving | 42 |  |
Total | 148 |  |
Classified | Commercial, financial, and agricultural |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 1,609 |  |
2020 | 793 |  |
2019 | 1,703 |  |
2018 | 7,096 |  |
2017 | 511 |  |
Prior | 96 |  |
Revolving | 1,152 |  |
Total | 12,960 |  |
Classified | Real estate – construction, land development & other land loans | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 1,541 |  |
2020 | 49 |  |
2019 | 47 |  |
2018 | 83 |  |
2017 | 14 |  |
Prior | 4 |  |
Revolving | 0 |  |
Total | 1,738 |  |
Classified | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 419 |  |
2020 | 156 |  |
2019 | 535 |  |
2018 | 1,185 |  |
2017 | 653 |  |
Prior | 11,246 |  |
Revolving | 931 |  |
Total | 15,125 |  |
Classified | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 75 |  |
2020 | 97 |  |
2019 | 71 |  |
2018 | 0 |  |
2017 | 0 |  |
Prior | 607 |  |
Revolving | 4,948 |  |
Total | 5,798 |  |
Classified | Real estate – mortgage – commercial and other | Real estate, commercial |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 7,147 |  |
2020 | 413 |  |
2019 | 2,110 |  |
2018 | 6,025 |  |
2017 | 3,897 |  |
Prior | 603 |  |
Revolving | 0 |  |
Total | $ 20,195 |  |
Classified Accruing Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 25,418 |
Classified Accruing Loans | Commercial, financial, and agricultural | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 1,087 |
Classified Accruing Loans | Consumer loans | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 169 |
Classified Accruing Loans | Real estate – construction, land development & other land loans | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 1,157 |
Classified Accruing Loans | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 11,039 |
Classified Accruing Loans | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 5,560 |
Classified Accruing Loans | Real estate – mortgage – commercial and other | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 4,801 |
Classified Accruing Loans | Purchased credit impaired |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 1,605 |
Classified Nonaccrual Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 35,076 |
Classified Nonaccrual Loans | Commercial, financial, and agricultural | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 9,681 |
Classified Nonaccrual Loans | Consumer loans | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 180 |
Classified Nonaccrual Loans | Real estate – construction, land development & other land loans | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 643 |
Classified Nonaccrual Loans | Real estate – mortgage – residential (1-4 family) first mortgages | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 6,048 |
Classified Nonaccrual Loans | Real estate – mortgage – home equity loans / lines of credit | Real estate, mortgage | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 1,333 |
Classified Nonaccrual Loans | Real estate – mortgage – commercial and other | Real estate, commercial | Loans, Excluding Purchased Credit Impaired Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | 17,191 |
Classified Nonaccrual Loans | Purchased credit impaired |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Total |  | $ 0 |

X
- Definition Financing Receivable, Excluding Accrued Interest, Before Allowance for Credit Loss, Fee, And Loan In Process + References No definition available. + Details
Name: | fbnc_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossFeeAndLoanInProcess
Namespace Prefix: | fbnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated more than five years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated four years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated three years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated in current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated two years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
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 No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unamortized loan commitment, origination, and other fees (costs) and purchase premium (discount) on financing receivable. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533 + Details
Name: | us-gaap_FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_FixedRateResidentialMortgageMember
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: |

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

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

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

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=fbnc_ClassifiedCreditAssessmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=fbnc_ClassifiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=fbnc_NonaccrualFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |