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Loans (Average Recorded Investments In Impaired Loans And Related Amount Of Interest Recognized) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Financing Receivable, Impaired [Line Items]    
Impaired Financing Receivable, Average Recorded Investment $ 12,021us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment $ 14,023us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Impaired Financing Receivable, Interest Income, Accrual Method 239us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod 138us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Small Business Administration Portfolio Segment [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Financing Receivable, Average Recorded Investment 1,997us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 [1] 3,050us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 [1]
Impaired Financing Receivable, Interest Income, Accrual Method 133us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 [1] 36us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 [1]
Impaired financing receivable average recorded investment, guaranteed by Small Business Administration 800unty_ImpairedFinancingReceivableAverageRecordedInvestmentGuaranteedBySmallBusinessAdministration
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember		 820unty_ImpairedFinancingReceivableAverageRecordedInvestmentGuaranteedBySmallBusinessAdministration
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministrationPortfolioSegmentMember
Small Business Administration, 504 Portfolio Segment [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Financing Receivable, Average Recorded Investment 3,871us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 2,698us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember
Impaired Financing Receivable, Interest Income, Accrual Method 26us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember		 27us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_SmallBusinessAdministration504PortfolioSegmentMember
Commercial Other Receivable [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Financing Receivable, Average Recorded Investment 1,117us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 67us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember
Impaired Financing Receivable, Interest Income, Accrual Method 18us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember		 1us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= unty_CommercialOtherReceivableMember
Commercial Real Estate Portfolio Segment [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Financing Receivable, Average Recorded Investment 5,036us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 8,031us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Impaired Financing Receivable, Interest Income, Accrual Method 62us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember		 74us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstatePortfolioSegmentMember
Commercial Real Estate Construction Financing Receivable [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Financing Receivable, Average Recorded Investment   $ 177us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
[1] Balances are reduced by the average amount guaranteed by the SBA of $800 thousand and $820 thousand for the three months ended March 31, 2015 and 2014, respectively.