XML 62 R52.htm IDEA: XBRL DOCUMENT
v3.25.2

Non-marketable Securities - Carrying Balance (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Non-marketable Securities |  |
Federal Reserve Bank stock | $ 24,062 | $ 24,062
Federal Home Loan Bank stock | 8,350 | 3,922
Convertible preferred stock | 20,508 | 20,508
Equity method investments | 28,204 | 27,970
Total | $ 81,124 | $ 76,462

X
- Definition Disclosure - Non-Marketable Securities (Narrative) [Abstract] + References No definition available. + Details
Name: | nbhc_DisclosureNonMarketableSecuritiesNarrativeAbstract
Namespace Prefix: | nbhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in equity method investments measured at fair value and investment in equity security without readily determinable fair value. + References No definition available. + Details
Name: | nbhc_EquityMethodInvestmentsFairValueAndWithoutReadilyDeterminableFairValue
Namespace Prefix: | nbhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total non-marketable securities, including FHLB stock, FRB stock, equity method investments and preferred stock. + References No definition available. + Details
Name: | nbhc_TotalNonMarketableSecurities
Namespace Prefix: | nbhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 325 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477974/942-325-45-1 + Details
Name: | us-gaap_FederalHomeLoanBankStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 325 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477974/942-325-45-1 + Details
Name: | us-gaap_FederalReserveBankStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant