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Loans - Schedule of Financial Effect of Loan Restructuring Modifications (Details)	3 Months Ended
	Mar. 31, 2023
Extended Maturity [Member] | Residential Portfolio Segment [Member] | Sr lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term extension	6 months
Payment Deferral [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment delay	2 months 12 days
Payment Deferral [Member] | Commercial Portfolio Segment [Member] | Owner-Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payment delay	6 months

X

- Definition

The term of temporary postponement of loan payments.

+ References

No definition available.

+ Details

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Namespace Prefix:	nbhc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The term of extension given related to modification of financing receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	nbhc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

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X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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X

- Details

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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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