Securities - Held to Maturity Debt Securities, Nonaccrual Status (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Nonaccrual Status
Debt securities, held-to-maturity, nonaccrual, interest income, reversed	$ 125	$ 0
Debt securities, held-to-maturity, nonaccrual, interest payments, reduction of principal	$ 213	$ 0

Debt Securities, Held-to-Maturity, Nonaccrual, Interest Payments, Reduction of Principal

No definition available.

Name:	unty_DebtSecuritiesHeldToMaturityNonaccrualInterestPaymentsReductionOfPrincipal
Namespace Prefix:	unty_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration