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Fair Value (Fair Value On A Nonrecurring Basis) (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired Financing Receivable, Related Allowance $ 1,161,000us-gaap_ImpairedFinancingReceivableRelatedAllowance $ 1,138,000us-gaap_ImpairedFinancingReceivableRelatedAllowance
Impaired Financing Receivable Related Allowance, Increase (Decrease) 23,000unty_ImpairedFinancingReceivableRelatedAllowanceIncreaseDecrease  
Standby letter of credit 1,500,000us-gaap_LineOfCredit 1,400,000us-gaap_LineOfCredit
Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 6.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Value for real estate appraisal for OREO or substance foreclosure $ 100,000unty_ValueForRealEstateAppraisalForOtherRealEstateOwnedOrSubstanceForeclosure
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Minimum [Member] | Market Approach Valuation Technique [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 10.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_MarketApproachValuationTechniqueMember
 
Minimum [Member] | Third Party Appraisal [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 8.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ValuationTechniqueAxis
= unty_ThirdPartyAppraisalMember
 
Maximum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 10.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Maximum [Member] | Market Approach Valuation Technique [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 15.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= us-gaap_MarketApproachValuationTechniqueMember
 
Maximum [Member] | Third Party Appraisal [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 10.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_ValuationTechniqueAxis
= unty_ThirdPartyAppraisalMember