Name:	uatc_BasisOfPresentationLineItems
Namespace Prefix:	uatc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Disclosure of the number of weeks included in the financial results of each fiscal year.

No definition available.

Number of screens in operation by the entity as of the balance sheet date.

No definition available.

Name:	uatc_NumberOfScreensInOperation
Namespace Prefix:	uatc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of theatres in operation by the entity as of the balance sheet date.

No definition available.

Name:	uatc_NumberOfTheatresInOperation
Namespace Prefix:	uatc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Disclosure of the number of weeks in each fiscal quarter for a 52-week fiscal year.

No definition available.

Name:	uatc_NumberOfWeeksInFiscalQuarter52WeekYear
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

The Company and Basis of Presentation (Details)	9 Months Ended
The Company and Basis of Presentation (Details)	Sep. 27, 2012	Dec. 26, 2013 theatre state screen	Dec. 27, 2012 state screen theatre
Basis of Presentation
Number of screens in operation (in screens)		476	485
Number of theatres in operation (in theatres)		53	54
Number of states in which entity operates (in states)		17	17
Number of weeks in fiscal quarter 52-week year (in weeks)	91 days
Minimum
Basis of Presentation
Length of fiscal year (in weeks)	364 days
Maximum
Basis of Presentation
Length of fiscal year (in weeks)	371 days