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Fair Value (Fair Value on a Nonrecurring Basis) (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired Financing Receivable, Related Allowance $ 981,000us-gaap_ImpairedFinancingReceivableRelatedAllowance $ 1,161,000us-gaap_ImpairedFinancingReceivableRelatedAllowance
Impaired Financing Receivable Related Allowance, Increase (Decrease) 180,000unty_ImpairedFinancingReceivableRelatedAllowanceIncreaseDecrease  
Standby letter of credit $ 1,500,000us-gaap_LineOfCredit  
Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing Receivable Modifications Post Modification Recorded Investment Discount For Selling And Closing Costs 8.00%unty_FinancingReceivableModificationsPostModificationRecordedInvestmentDiscountForSellingAndClosingCosts
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Minimum [Member] | Fair Value, Inputs, Level 3 [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_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Maximum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Financing Receivable Modifications Post Modification Recorded Investment Discount For Selling And Closing Costs 10.00%unty_FinancingReceivableModificationsPostModificationRecordedInvestmentDiscountForSellingAndClosingCosts
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Maximum [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value Inputs, Discount Rate 25.00%us-gaap_FairValueInputsDiscountRate
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember