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Schedule of Segment Reporting Information by Segment Charges (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 30, 2014 | Mar. 31, 2013
Segment Reporting Information [Line Items] |  |
Restructuring and other |  | $ 332
Semiconductor Test |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-provision for excess and obsolete inventory | 6,205 | 213
System Test |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-provision for excess and obsolete inventory | 741 | 919
Restructuring and other |  | 244
Total | 741 | 1,163
Wireless Test |  |
Segment Reporting Information [Line Items] |  |
Cost of revenues-provision for excess and obsolete inventory | $ 3,093 | $ 2,668

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- Definition Cost of revenues-provision for excess and obsolete inventory. + References No definition available. + Details
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Period Type: | duration

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- Definition Segment reporting information segment charges. + References No definition available. + Details
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Namespace Prefix: | ter_
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Balance Type: | debit
Period Type: | duration

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- Definition The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
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