XML 40 R134.htm IDEA: XBRL DOCUMENT v2.4.1.9
Consolidated Quarterly Statements of Operations (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 28, 2014
Jun. 29, 2014
Mar. 30, 2014
Dec. 31, 2013
Sep. 29, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Quarterly Financial Information [Line Items]                      
Changes to fair value of contingent consideration   $ (630)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1             $ (630)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1   $ (8,761)us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
Pension and post retirement net actuarial losses (gain)                 46,564us-gaap_DefinedBenefitPlanActuarialGainLoss (10,340)us-gaap_DefinedBenefitPlanActuarialGainLoss 23,320us-gaap_DefinedBenefitPlanActuarialGainLoss
Goodwill impairment 98,897us-gaap_GoodwillImpairmentLoss [1],[2],[3]               98,897us-gaap_GoodwillImpairmentLoss    
Other (income) expense, net (463)us-gaap_OtherNonoperatingIncomeExpense [1],[2],[3] 654us-gaap_OtherNonoperatingIncomeExpense [1],[4] (382)us-gaap_OtherNonoperatingIncomeExpense [1] (180)us-gaap_OtherNonoperatingIncomeExpense 34,168us-gaap_OtherNonoperatingIncomeExpense [5],[6] (414)us-gaap_OtherNonoperatingIncomeExpense (19)us-gaap_OtherNonoperatingIncomeExpense (503)us-gaap_OtherNonoperatingIncomeExpense (372)us-gaap_OtherNonoperatingIncomeExpense 33,231us-gaap_OtherNonoperatingIncomeExpense (948)us-gaap_OtherNonoperatingIncomeExpense
Defined Benefit Pension And Post Retirement Benefit Plans                      
Quarterly Financial Information [Line Items]                      
Pension and post retirement net actuarial losses (gain) $ 46,600us-gaap_DefinedBenefitPlanActuarialGainLoss
/ ter_DefinedBenefitPensionPlanAxis
= ter_DefinedBenefitPensionAndPostRetirementBenefitPlansMember		       $ (9,000)us-gaap_DefinedBenefitPlanActuarialGainLoss
/ ter_DefinedBenefitPensionPlanAxis
= ter_DefinedBenefitPensionAndPostRetirementBenefitPlansMember		            
[1] Dividends declared by Teradyne's Board of Directors were paid in each of the second, third and fourth quarters of 2014.
[2] In the fourth quarter ended December 31, 2014, Teradyne recorded pension and post retirement net actuarial losses of $46.6 million. See Note B: "Accounting Policies" for a discussion of our accounting policy.
[3] In the fourth quarter ended December 31, 2014, Teradyne recorded a goodwill impairment charge of $98.9 million in its Wireless Test segment.
[4] Restructuring and other includes a $(0.6) million fair value adjustment to decrease the ZTEC acquisition contingent consideration.
[5] Other (income) expense, net includes a $34.2 million gain from the sale of an equity investment.
[6] In the fourth quarter ended December 31, 2013, Teradyne recorded pension and post retirement net actuarial gains of $9.0 million. See Note B: "Accounting Policies" for a discussion of our accounting policy.