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Deferred Revenue and Customer Advances | 9 Months Ended
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Sep. 29, 2013
Deferred Revenue and Customer Advances | F. Deferred Revenue and Customer Advances Deferred revenue and customer advances consist of the following and are included in short and long-term deferred revenue and customer advances.
|  | September 29, 2013 |  |  | December 31, 2012 |
|  | (in thousands) |
Maintenance, training and extended warranty |  | $ | 56,481 |  |  | $ | 51,198 |
Customer advances |  |  | 22,287 |  |  |  | 39,613 |
Undelivered elements |  |  | 9,054 |  |  |  | 6,773 |
Total deferred revenue and customer advances |  | $ | 87,822 |  |  | $ | 97,584 |

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- Definition Deferred Revenue and Customer Advances Disclosure. + References No definition available. + Details
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Namespace Prefix: | ter_
Data Type: | nonnum:textBlockItemType
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Period Type: | duration