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Net Income Per Common Share - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
	Apr. 05, 2015	Mar. 30, 2014
Net Income Loss Per Common Share
Exercise of stock options	0.2ter_StockIssuedDuringPeriodSharesSaleOfStockAndExerciseOfStockOptions	0.4ter_StockIssuedDuringPeriodSharesSaleOfStockAndExerciseOfStockOptions

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- Definition

Stock Issued During Period Shares Sale Of Stock And Exercise Of Stock Options

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No definition available.

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