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Loans (Aging Analysis Of Past Due And Nonaccrual Loans By Class) (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due $ 3,057,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue $ 9,070,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 1,061,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue 1,024,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due 5,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue 890,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
Financing Receivable, Recorded Investment, Nonaccrual Status 9,141,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus [1] 11,368,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus [2]
Financing Receivable, Recorded Investment, Past Due 13,264,000us-gaap_FinancingReceivableRecordedInvestmentPastDue 22,352,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
Financing Receivable, Recorded Investment, Current 771,378,000us-gaap_FinancingReceivableRecordedInvestmentCurrent 739,473,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
Total loans 777,713,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount 756,646,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
SBA loans held for sale 6,929,000us-gaap_LoansHeldForSaleOther 5,179,000us-gaap_LoansHeldForSaleOther
Total loans 784,642,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome 761,825,000us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Performing troubled debt restructurings 3,500,000unty_PerformingTroubledDebtRestructurings 3,500,000unty_PerformingTroubledDebtRestructurings
SBA, SBA 504, and Commercial Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total loans 479,790,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504AndCommercialLoansMember		 476,672,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504AndCommercialLoansMember
Residential and Consumer Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total loans 297,923,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ResidentialAndConsumerLoansMember		 279,974,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ResidentialAndConsumerLoansMember
Small Business Administration Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 840,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 1,093,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due   147,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due   161,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Financing Receivable, Recorded Investment, Nonaccrual Status 1,720,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 [1] 3,348,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 [2]
Financing Receivable, Recorded Investment, Past Due 2,560,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 4,749,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Financing Receivable, Recorded Investment, Current 36,595,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 35,652,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Total loans 39,155,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 40,401,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Small Business Administration, 504 Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due   1,639,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember
Financing Receivable, Recorded Investment, Nonaccrual Status 466,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 [1] 2,109,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 [2]
Financing Receivable, Recorded Investment, Past Due 466,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 3,748,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember
Financing Receivable, Recorded Investment, Current 29,427,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 30,574,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember
Total loans 29,893,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 34,322,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember
Commercial Other Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 8,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		  
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 447,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		  
Financing Receivable, Recorded Investment, Nonaccrual Status 1,017,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 [1] 1,129,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 [2]
Financing Receivable, Recorded Investment, Past Due 1,472,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 1,129,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember
Financing Receivable, Recorded Investment, Current 37,906,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 39,478,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember
Total loans 39,378,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 40,607,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember
Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 619,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 2,812,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 123,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		  
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due 5,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 7,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Financing Receivable, Recorded Investment, Nonaccrual Status 3,497,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 [1] 3,592,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 [2]
Financing Receivable, Recorded Investment, Past Due 4,244,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 6,411,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Financing Receivable, Recorded Investment, Current 344,695,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 333,282,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Total loans 348,939,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 339,693,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Commercial Real Estate Construction Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Current 22,425,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		 21,649,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Total loans 22,425,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		 21,649,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Commercial Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total loans 410,742,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 401,949,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Residential Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 1,195,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 2,887,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 441,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 658,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due   722,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember
Financing Receivable, Recorded Investment, Nonaccrual Status 1,748,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 [1] 645,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 [2]
Financing Receivable, Recorded Investment, Past Due 3,384,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 4,912,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember
Financing Receivable, Recorded Investment, Current 231,987,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 215,966,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember
Total loans 235,371,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember		 220,878,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialPortfolioSegmentMember
Consumer Home Equity Line Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 313,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 639,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 50,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 213,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember
Financing Receivable, Recorded Investment, Nonaccrual Status 687,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 [1] 543,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 [2]
Financing Receivable, Recorded Investment, Past Due 1,050,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 1,395,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember
Financing Receivable, Recorded Investment, Current 42,031,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 40,056,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember
Total loans 43,081,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember		 41,451,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_ConsumerHomeEquityLineFinancingReceivableMember
Consumer Other Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due   6,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember
Financing Receivable, Recorded Investment, Nonaccrual Status 6,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 [1] 2,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 [2]
Financing Receivable, Recorded Investment, Past Due 6,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 8,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember
Financing Receivable, Recorded Investment, Current 19,465,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 17,637,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember
Total loans 19,471,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember		 17,645,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerOtherFinancingReceivableMember
Consumer Portfolio Segment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Total loans 62,552,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 59,096,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Loans Held for Investment [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 2,975,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 9,070,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due 1,061,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 1,024,000us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due 5,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 890,000us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember
Financing Receivable, Recorded Investment, Nonaccrual Status 9,141,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 [1] 11,368,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 [2]
Financing Receivable, Recorded Investment, Past Due 13,182,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 22,352,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember
Financing Receivable, Recorded Investment, Current 764,531,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 734,294,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember
Total loans 777,713,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember		 756,646,000us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansHeldForInvestmentMember
SBA Loans Held For Sale [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 82,000us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SbaLoansHeldForSaleMember		  
Financing Receivable, Recorded Investment, Past Due 82,000us-gaap_FinancingReceivableRecordedInvestmentPastDue
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SbaLoansHeldForSaleMember		  
Financing Receivable, Recorded Investment, Current 6,847,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SbaLoansHeldForSaleMember		 5,179,000us-gaap_FinancingReceivableRecordedInvestmentCurrent
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SbaLoansHeldForSaleMember
SBA loans held for sale 6,929,000us-gaap_LoansHeldForSaleOther
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SbaLoansHeldForSaleMember		 5,179,000us-gaap_LoansHeldForSaleOther
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SbaLoansHeldForSaleMember
Loans Guaranteed By Small Business Administration [Member] | Non Accrual [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Nonaccrual Status 270,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansGuaranteedBySmallBusinessAdministrationMember
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= unty_NonAccrualMember		 1,600,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansGuaranteedBySmallBusinessAdministrationMember
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= unty_NonAccrualMember
Loans Guaranteed By Small Business Administration [Member] | Troubled Debt Restructuring (TDR) [Member] | Non Accrual [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Financing Receivable, Recorded Investment, Nonaccrual Status $ 2,900,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansGuaranteedBySmallBusinessAdministrationMember
/ us-gaap_InternalCreditAssessmentAxis
= unty_TroubledDebtRestructuringTdrMember
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= unty_NonAccrualMember		 $ 3,000,000us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_LoansGuaranteedBySmallBusinessAdministrationMember
/ us-gaap_InternalCreditAssessmentAxis
= unty_TroubledDebtRestructuringTdrMember
/ us-gaap_MortgageLoansOnRealEstateLoanTypeAxis
= unty_NonAccrualMember
[1] At March 31, 2015, nonaccrual loans included $2.9 million of TDRs and $270 thousand of loans guaranteed by the SBA.  The remaining $3.5 million of TDRs are in accrual status because they are performing in accordance with their restructured terms.
[2] At December 31, 2014, nonaccrual loans included $3.0 million of TDRs and $1.6 million of loans guaranteed by the SBA.  The remaining $3.5 million of TDRs are in accrual status because they are performing in accordance with their restructured terms.