Accumulated amortized cost excluding accrued interest, of financing receivable modified for debtor experiencing financial difficulty.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestModifiedAccumulated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage, excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-34

Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-33

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PrincipalForgivenessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=unty_SmallBusinessAdministrationPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=unty_SmallBusinessAdministration504PortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=unty_CommercialAndIndustrialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_InterestRateBelowMarketReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans - Modifications (Details) - USD ($) $ in Thousands		6 Months Ended
Loans - Modifications (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2025	Jun. 30, 2024
Principal Forgiveness
Financing Receivable, Modified [Line Items]
Amortized Cost Basis			$ 4
Principal Forgiveness \| SBA Held for Investment
Financing Receivable, Modified [Line Items]
Amortized Cost Basis			4
Payment Delay
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 1,938	$ 1,938	$ 3,754
Percentage of Loan Class	0.10%		0.20%
Payment Delay \| SBA Held for Investment
Financing Receivable, Modified [Line Items]
Amortized Cost Basis			$ 99
Percentage of Loan Class			0.30%
Payment Delay \| SBA 504 \| SBA Held for Investment
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 187	$ 187
Percentage of Loan Class		0.50%
Payment Delay \| Commercial real estate \| Commercial loans
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	628	$ 628	$ 2,619
Percentage of Loan Class		0.10%	0.30%
Payment Delay \| Residential mortgage loans
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	1,123	$ 1,123	$ 1,036
Percentage of Loan Class		0.20%	0.20%
Term Extension
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 267	$ 267	$ 4,383
Percentage of Loan Class	0.10%		0.20%
Term Extension \| SBA 504 \| SBA Held for Investment
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 214	$ 214
Percentage of Loan Class		0.60%
Term Extension \| Commercial & industrial \| Commercial loans
Financing Receivable, Modified [Line Items]
Amortized Cost Basis			$ 2,074
Percentage of Loan Class			1.40%
Term Extension \| Home equity \| Consumer loans
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	53	$ 53	$ 2,309
Percentage of Loan Class		0.10%	3.50%
Interest Rate Reduction
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	1,860	$ 1,860
Percentage of Loan Class		0.10%
Interest Rate Reduction \| Commercial real estate \| Commercial loans
Financing Receivable, Modified [Line Items]
Amortized Cost Basis	$ 1,860	$ 1,860
Percentage of Loan Class		0.20%