Employee Benefits Plan (Details)	12 Months Ended
Dec. 26, 2013
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Employee contribution limit percentage of compensation (as a percent)	50.00%
Employer match, Level one (as a percent)	100.00%
Employer match, Employee contribution, Level one (as a percent)	3.00%
Employer match, Level two (as a percent)	50.00%
Employer match, Employee contribution, Level two (as a percent)	2.00%

The limit of annual employee contributions to the plan per calendar year as a percentage of compensation.

No definition available.

Name:	uatc_DefinedContributionPlanEmployeeContributionLimitPercentageOfCompensation
Namespace Prefix:	uatc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the first level of employee contributions (percentage of compensation) which are matched by the employer.

No definition available.

Name:	uatc_DefinedContributionPlanEmployerMatchEmployeeContributionLevelOne
Namespace Prefix:	uatc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the second level of employee contributions (percentage of compensation) which are matched by the employer.

No definition available.

Name:	uatc_DefinedContributionPlanEmployerMatchEmployeeContributionLevelTwo
Namespace Prefix:	uatc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the employer matching contribution of the first level of employee contributions.

No definition available.

Name:	uatc_DefinedContributionPlanEmployerMatchLevelOne
Namespace Prefix:	uatc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the employer matching contribution of the second level of employee contributions.

No definition available.

Name:	uatc_DefinedContributionPlanEmployerMatchLevelTwo
Namespace Prefix:	uatc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration