Net Income per Share (Narrative) (Details)	6 Months Ended
Jun. 30, 2013
Net Income per Share [Abstract]
Common Stock Warrants Issued To U.S. Treasury Under Capital Purchase Program In December 2008	764,778

Dilutive common stock warrants issued to the U.S Department of Treasury under Capital Purchase Program.

No definition available.

Name:	unty_DilutiveCommonStockWarrants
Namespace Prefix:	unty_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration