The Company and Basis of Presentation (Details)	Jan. 01, 2015 theatre screen state	Dec. 26, 2013 screen state theatre
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of screens in operation (in screens)	445uatc_NumberOfScreensInOperation	476uatc_NumberOfScreensInOperation
Number of theatres in operation	49uatc_NumberOfTheatresInOperation	53uatc_NumberOfTheatresInOperation
Number of states in which entity operates	17	17

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant