Description of Plan - Additional Information (Details) - EBP 001 - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
EBP, Description of Plan [Line Items]
EBP, Description, Available [true false]	true
Percentage of eligible participants automatically enrolled in plan	3.00%
Percentage increase per year of participant's pre-tax elective deferrals	1.00%
Age before end of plan year eligible to make catch-up contributions	50 years
Discretionary employer contributions	0.00%
Retirement age	62 years
Age requirement for penalty free distribution	59 years 6 months
Participant deferrals and repayments on notes receivable		$ 52
Maximum
EBP, Description of Plan [Line Items]
Percentage increase per year of participant's pre-tax elective deferrals	6.00%
Percentage of base compensation upto which participant can contribute	75.00%
Safe Harbor Basic Matching Contributions \| 4% of Eligible Compensation
EBP, Description of Plan [Line Items]
Participants' contributions	100.00%
Safe Harbor Basic Matching Contributions \| 2% of Eligible Compensation
EBP, Description of Plan [Line Items]
Participants' contributions	50.00%
Eligible compensation	2.00%
Safe Harbor Basic Matching Contributions \| Maximum \| 4% of Eligible Compensation
EBP, Description of Plan [Line Items]
Eligible compensation	4.00%
Match True-Up Contribution \| 4% of Eligible Compensation
EBP, Description of Plan [Line Items]
Participants' contributions	100.00%
Match True-Up Contribution \| 2% of Eligible Compensation
EBP, Description of Plan [Line Items]
Participants' contributions	50.00%
Eligible compensation	2.00%
Match True-Up Contribution \| Maximum \| 4% of Eligible Compensation
EBP, Description of Plan [Line Items]
Eligible compensation	4.00%

Employee benefit plan age before end of plan year eligible to make catch-up contributions.

No definition available.

Name:	unty_EmployeeBenefitPlanAgeBeforeEndOfPlanYearEligibleToMakeCatch-UpContributions
Namespace Prefix:	unty_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Employee benefit plan discretionary employer contributions.

+ References

No definition available.

+ Details

Name:	unty_EmployeeBenefitPlanDiscretionaryEmployerContributions
Namespace Prefix:	unty_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Employee benefit plan participant age for distribution not subject to penalty.

+ References

No definition available.

+ Details

Name:	unty_EmployeeBenefitPlanParticipantAgeForDistributionNotSubjectToPenalty
Namespace Prefix:	unty_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Employee benefit plan participant deferrals and repayments on notes receivable.

+ References

No definition available.

+ Details

Name:	unty_EmployeeBenefitPlanParticipantDeferralsAndRepaymentsOnNotesReceivable
Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Employee benefit plan percentage of eligible participants automatically enrolled in plan.

+ References

No definition available.

+ Details

Name:	unty_EmployeeBenefitPlanPercentageOfEligibleParticipantsAutomaticallyEnrolledInPlan
Namespace Prefix:	unty_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Employee benefit plan retirement age.

+ References

No definition available.

+ Details

Name:	unty_EmployeeBenefitPlanRetirementAge
Namespace Prefix:	unty_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates (true false) whether description of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) is published and made available.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionAvailable
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:booleanItemType
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/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 205
-Topic 962
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=unty_EBP001Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=unty_SafeHarborBasicMatchingContributionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap-ebp_EmployeeBenefitPlanAllocationStatusAxis=unty_FourPercentageOfEligibleCompensationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap-ebp_EmployeeBenefitPlanAllocationStatusAxis=unty_TwoPercenatgeOfEligibleCompensationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=unty_MatchTrue-UpContributionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: