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Basis of Presentation (Details) | 12 Months Ended
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Dec. 31, 2023 item
Basis of Presentation |
Number of full service banking offices | 90

X
- Definition Represents the number of full service banking offices. + References No definition available. + Details
Name: | nbhc_NumberOfFullServiceBankingOffices
Namespace Prefix: | nbhc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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