Employee Benefit Plans (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined contribution plan, maximum annual contributions per employee, percent	80.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 258	$ 240
Deferred fees	79unty_DeferredFees	44unty_DeferredFees
Interest paid on deferred fees	23unty_InterestPaidOnDeferredFees	19unty_InterestPaidOnDeferredFees
Deferred compensation arrangement with individual, distributions paid	0	22
Life Settlement Contracts, Fair Value Method, Face Value	250
Life Settlement Contracts, Period Expense	5	4
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based compensation arrangement by Share-based payment Award, Options, Award Expiration Period	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,720,529
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	418,921	448,975	516,332
Share-based compensation arrangement by Share-based payment Award, Options, Exercised Forfeited Or Expired Number	1,252,416
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	49,192
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	189
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2 years
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage	100.00%
Executive Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement, option to elect to defer fees and bonuses, percentage	100.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	471,551
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	214,500
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 491
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2 years 7 months 6 days

Deferred fees

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- Definition

Interest paid on deferred fees

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- Definition

Share Based Compensation Arrangement By ShareBased Payment Award Award Expiration Period

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Forfited Or Expired Number

+ References

No definition available.

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- Definition

Commitment made to pay deferred cash remuneration expressed as a percentage of the individual's base salary.

+ References

No definition available.

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- Definition

The amount of distributions made to the individual during the period.

+ References

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Face value (death benefits) of the life insurance policies underlying the life settlement contracts accounted for under the fair value method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Life Settlement Contract

-URI http://asc.fasb.org/extlink&oid=6516907

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 30

-Section 50

-Paragraph 8

-Subparagraph (c)

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- Definition

Period expense related to postemployment benefits.

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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-Topic 718

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-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

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