Name:	unty_DebtSecuritiesAvailableForSaleRealizedGain
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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

No definition available.

Name:	unty_DebtSecuritiesAvailableForSaleRealizedGainLoss
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

No definition available.

Name:	unty_DebtSecuritiesAvailableForSaleRealizedLoss
Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Gain (Loss) On Sale Of Securities, Excluding Equity Securities, Net

No definition available.

Name:	unty_GainLossOnSaleOfSecuritiesExcludingEquitySecuritiesNet
Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Held-To-Maturity Securities, Gross Realized Gains

No definition available.

Name:	unty_HeldToMaturitySecuritiesGrossRealizedGains
Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
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Held-To-Maturity Securities, Gross Realized Losses

No definition available.

Name:	unty_HeldToMaturitySecuritiesGrossRealizedLosses
Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- References

No definition available.

Name:	us-gaap_AvailableForSaleSecuritiesAbstract
Namespace Prefix:	us-gaap_
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The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.3)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Name:	us-gaap_GainLossOnSaleOfSecuritiesNet
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- References

No definition available.

Name:	us-gaap_HeldToMaturitySecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This item represents the gain (loss) realized on the sale of held-to-maturity securities disposed of during the period. Additionally, this item may include, if not separately presented, any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt securities which are being or have been recognized in earnings during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27405-111563