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Net Income Per Common Share - Additional Information (Detail) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 30, 2014 | Mar. 31, 2013
Net Income Loss Per Common Share |  |
Exercise of stock options | 0.4 | 0.4

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- Details
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Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Definition Stock Issued During Period Shares Sale Of Stock And Exercise Of Stock Options + References No definition available. + Details
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Namespace Prefix: | ter_
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