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Securities (Schedule Of Marketable Securities By Contractual Maturity) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Schedule of Investments [Line Items]    
Available for sale at fair value, Within one year $ 39us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue  
Available for sale at fair value yield, Within one year 6.48%unty_AvailableForSaleSecuritiesDebtMaturitiesNextTwelveMonthsFairValueYield  
Available for sale at fair value, After one through five years 6,128us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue  
Available for sale at fair value yield, After one through five years 1.44%unty_AvailableForSaleSecuritiesDebtMaturitiesYearTwoThroughFiveYearsFairValueYield  
Available for sale at fair value, After five through ten years 10,921us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue  
Available for sale at fair value yield, After five through ten years 2.12%unty_AvailableForSaleSecuritiesDebtMaturitiesYearSixThroughTenYearsFairValueYield  
Available for sale at fair value, After ten years 40,787us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue  
Available for sale at fair value yield, After ten years 2.42%unty_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueYield  
Available-for-sale Securities 57,875us-gaap_AvailableForSaleSecurities 60,073us-gaap_AvailableForSaleSecurities
Available for sale at fair value yield 2.27%unty_AvailableForSaleSecuritiesTotalFairValueYield  
Held to maturity at cost, Within one year 309us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount  
Held to maturity at cost yield, Within one year 0.75%unty_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmountYield  
Held to maturity at cost, After one through five years 380us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount  
Held to maturity at cost yield, After one through five years 4.81%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmountYield  
Held to maturity at cost, After five through ten years 1,231us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount  
Held to maturity at cost yield, After five through ten years 3.41%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmountYield  
Held to maturity at cost, After ten years 17,513us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount  
Held to maturity at cost yield, After ten years 2.81%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmountYield  
Held to maturity Securities 19,433us-gaap_HeldToMaturitySecurities 20,009us-gaap_HeldToMaturitySecurities
Held to maturity at cost yield, 2.86%unty_HeldToMaturitySecuritiesTotalCarryingAmountYield  
US Government Agencies Debt Securities [Member]    
Schedule of Investments [Line Items]    
Available for sale at fair value, After one through five years 1,018us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Available for sale at fair value yield, After one through five years 1.00%unty_AvailableForSaleSecuritiesDebtMaturitiesYearTwoThroughFiveYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Available for sale at fair value, After five through ten years 937us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Available for sale at fair value yield, After five through ten years 2.07%unty_AvailableForSaleSecuritiesDebtMaturitiesYearSixThroughTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Available for sale at fair value, After ten years 2,573us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Available for sale at fair value yield, After ten years 2.04%unty_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Available-for-sale Securities 4,528us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
4,618us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Available for sale at fair value yield 1.81%unty_AvailableForSaleSecuritiesTotalFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Held to maturity at cost, After ten years 4,440us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Held to maturity at cost yield, After ten years 1.96%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
Held to maturity Securities 4,440us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
4,440us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Held to maturity at cost yield, 1.96%unty_HeldToMaturitySecuritiesTotalCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USGovernmentAgenciesDebtSecuritiesMember
 
US States and Political Subdivisions Debt Securities [Member]    
Schedule of Investments [Line Items]    
Available for sale at fair value, Within one year 39us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value yield, Within one year 6.48%unty_AvailableForSaleSecuritiesDebtMaturitiesNextTwelveMonthsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value, After one through five years 1,172us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value yield, After one through five years 2.23%unty_AvailableForSaleSecuritiesDebtMaturitiesYearTwoThroughFiveYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value, After five through ten years 6,334us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value yield, After five through ten years 2.41%unty_AvailableForSaleSecuritiesDebtMaturitiesYearSixThroughTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value, After ten years 3,618us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available for sale at fair value yield, After ten years 2.56%unty_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Available-for-sale Securities 11,163us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
11,132us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
Available for sale at fair value yield 2.45%unty_AvailableForSaleSecuritiesTotalFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Held to maturity at cost, Within one year 309us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Held to maturity at cost yield, Within one year 0.75%unty_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Held to maturity at cost, After ten years 2,106us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Held to maturity at cost yield, After ten years 4.72%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Held to maturity Securities 2,415us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
2,417us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
Held to maturity at cost yield, 4.21%unty_HeldToMaturitySecuritiesTotalCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_USStatesAndPoliticalSubdivisionsMember
 
Residential Mortgage Backed Securities [Member]    
Schedule of Investments [Line Items]    
Available for sale at fair value, After one through five years 1,538us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Available for sale at fair value yield, After one through five years 1.79%unty_AvailableForSaleSecuritiesDebtMaturitiesYearTwoThroughFiveYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Available for sale at fair value, After five through ten years 2,204us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Available for sale at fair value yield, After five through ten years 1.94%unty_AvailableForSaleSecuritiesDebtMaturitiesYearSixThroughTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Available for sale at fair value, After ten years 28,570us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Available for sale at fair value yield, After ten years 2.79%unty_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Available-for-sale Securities 32,312us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
34,383us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
Available for sale at fair value yield 2.68%unty_AvailableForSaleSecuritiesTotalFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity at cost, After one through five years 380us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity at cost yield, After one through five years 4.81%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity at cost, After five through ten years 248us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity at cost yield, After five through ten years 5.21%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity at cost, After ten years 6,987us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity at cost yield, After ten years 2.81%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Held to maturity Securities 7,615us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
8,164us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
Held to maturity at cost yield, 2.99%unty_HeldToMaturitySecuritiesTotalCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ResidentialMortgageBackedSecuritiesMember
 
Commercial Mortgage Backed Securities [Member]    
Schedule of Investments [Line Items]    
Held to maturity at cost, After ten years 3,980us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember
 
Held to maturity at cost yield, After ten years 2.76%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember
 
Held to maturity Securities 3,980us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember
4,005us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember
Held to maturity at cost yield, 2.76%unty_HeldToMaturitySecuritiesTotalCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommercialMortgageBackedSecuritiesMember
 
Corporate and Other Securities [Member]    
Schedule of Investments [Line Items]    
Available for sale at fair value, After one through five years 2,400us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Available for sale at fair value yield, After one through five years 1.02%unty_AvailableForSaleSecuritiesDebtMaturitiesYearTwoThroughFiveYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Available for sale at fair value, After five through ten years 1,446us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Available for sale at fair value yield, After five through ten years 1.18%unty_AvailableForSaleSecuritiesDebtMaturitiesYearSixThroughTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Available for sale at fair value, After ten years 6,026us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Available for sale at fair value yield, After ten years 0.75%unty_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Available-for-sale Securities 9,872us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
9,940us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
Available for sale at fair value yield 0.88%unty_AvailableForSaleSecuritiesTotalFairValueYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Held to maturity at cost, After five through ten years 983us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Held to maturity at cost yield, After five through ten years 2.95%unty_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
 
Held to maturity Securities $ 983us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
$ 983us-gaap_HeldToMaturitySecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember
Held to maturity at cost yield, 2.95%unty_HeldToMaturitySecuritiesTotalCarryingAmountYield
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CorporateDebtSecuritiesMember