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Deferred Revenue and Customer Advances (Tables) | 6 Months Ended
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Jun. 29, 2014
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 on the balance sheet:
|  | June 29, 2014 |  |  | December 31, 2013 |
|  | (in thousands) |
Extended warranty |  | $ | 40,052 |  |  | $ | 34,909 |
Equipment maintenance and training |  |  | 26,535 |  |  |  | 22,455 |
Customer advances |  |  | 8,926 |  |  |  | 4,825 |
Undelivered elements |  |  | 5,831 |  |  |  | 6,971 |
Customer acceptance |  |  | 1,616 |  |  |  | — |
Total deferred revenue and customer advances |  | $ | 82,960 |  |  | $ | 69,160 |

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- Definition Schedule of deferred revenue and customer advances. + References No definition available. + Details
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Namespace Prefix: | ter_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration