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Deferred Revenue and Customer Advances (Tables) | 3 Months Ended
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Apr. 02, 2017
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:
|  | April 2, |  |  | December 31, |
|  | 2017 |  |  | 2016 |
|  | (in thousands) |
Extended warranty |  | $ | 44,053 |  |  | $ | 46,753 |
Equipment maintenance and training |  |  | 41,995 |  |  |  | 39,037 |
Customer advances, undelivered elements and other |  |  | 18,729 |  |  |  | 22,151 |
Total deferred revenue and customer advances |  | $ | 104,777 |  |  | $ | 107,941 |

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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