XML 90 R64.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 loan
Significant Accounting Policies [Line Items] |
Residential mortgage loans held for sale period | 45 days
Number of primary loan segment | 4
Number of loan classes | 11
Buildings |
Significant Accounting Policies [Line Items] |
Estimated useful life of the asset | 39 years
Maximum |
Significant Accounting Policies [Line Items] |
Fair values are subject to refinement maximum year | 1 year
Maximum | Employee Stock Option |
Significant Accounting Policies [Line Items] |
Contractual term | 10 years
Maximum | Building Improvements |
Significant Accounting Policies [Line Items] |
Estimated useful life of the asset | 15 years
Maximum | Business assets |
Significant Accounting Policies [Line Items] |
Estimated useful life of the asset | 7 years
Minimum | Building Improvements |
Significant Accounting Policies [Line Items] |
Estimated useful life of the asset | 7 years
Minimum | Business assets |
Significant Accounting Policies [Line Items] |
Estimated useful life of the asset | 3 years

X
- Definition Fair Value Inputs Weighted Average Expected Term + References No definition available. + Details
Name: | nbhc_FairValueInputsWeightedAverageExpectedTerm
Namespace Prefix: | nbhc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans Held For Sale Maximum Period Of Sale + References No definition available. + Details
Name: | nbhc_LoansHeldForSaleMaximumPeriodOfSale
Namespace Prefix: | nbhc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents element information pertaining to number of loan classes to provide granularity. + References No definition available. + Details
Name: | nbhc_NumberOfLoanClassesToProvideGranularity
Namespace Prefix: | nbhc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents element information pertaining to number of primary loan segment. + References No definition available. + Details
Name: | nbhc_NumberOfPrimaryLoanSegment
Namespace Prefix: | nbhc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | nbhc_SignificantAccountingPoliciesLineItems
Namespace Prefix: | nbhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |