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Component: (Network and Table)
Network
1052 - Disclosure - Warranty Accrual Included in Other Accrued Liabilities (Detail)
(http://www.teradyne.com/taxonomy/role/DisclosureWarrantyAccrualIncludedInOtherAccruedLiabilities)
TableSchedule of Accrued Liabilities [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000097210 (http://www.sec.gov/CIK)
Legal Entity [Axis]Entity [Domain]
Schedule of Accrued Liabilities [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Balance at beginning of period
9,786,000  
8,153,000  
9,886,000  
Acquisition
 
 
327,000  
Accruals for warranties issued during the period
10,574,000  
14,704,000  
13,167,000  
Accruals related to pre-existing warranties
(3,534,000) 
877,000  
(2,689,000) 
Settlements made during the period
(10,166,000) 
(13,948,000) 
(12,538,000) 
Balance at end of period
6,660,000  
 
9,786,000  
 
8,153,000