Loans - Other Loan Information - Servicing Assets - Loans Sold, in Process (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Residential mortgage loans
Servicing Assets
Loans in the process of being sold	$ 3.4	$ 5.0

Servicing Asset, Loan Sales to Investors, in Process, Amount

No definition available.

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Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant