XML 96 R87.htm IDEA: XBRL DOCUMENT
v3.23.1

Commitments and Contingencies - Schedule of Total Unfunded Commitments (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Commitment And Contingencies [Line Items] |  |
Total unfunded commitments | $ 2,044,382 | $ 2,008,337
Unfunded loan commitment reserves [Member] |  |
Commitment And Contingencies [Line Items] |  |
Total unfunded commitments | 1,122,858 | 1,124,942
Credit Card Lines of Credit [Member] |  |
Commitment And Contingencies [Line Items] |  |
Total unfunded commitments | 6,770 | 7,167
Unfunded Commitment Line Of Credit [Member] |  |
Commitment And Contingencies [Line Items] |  |
Total unfunded commitments | 902,871 | 862,369
Commercial And Standby Letters Of Credit [Member] |  |
Commitment And Contingencies [Line Items] |  |
Total unfunded commitments | $ 11,883 | $ 13,859

X
- Definition Commitment And Contingencies [Line Items] + References No definition available. + Details
Name: | nbhc_CommitmentAndContingenciesLineItems
Namespace Prefix: | nbhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unfunded Loan Commitments. + References No definition available. + Details
Name: | nbhc_UnfundedLoanCommitments
Namespace Prefix: | nbhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=nbhc_CreditCardLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=nbhc_UnfundedCommitmentLineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=nbhc_CommercialAndStandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |