XML 116 R62.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Restructuring and Other - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2012 | Jun. 30, 2013 | Jul. 01, 2012
Restructuring Cost and Reserve |  |  |
Business acquisition, contingent consideration | $ 6.5 |  | $ 8.4
Remaining accrual for lease payments |  | $ 0.6 |
Lease expiration date |  | Oct. 31, 2013 |

X
- Definition Change Of Business Acquisition Contingent Consideration At Fair Value + References No definition available. + Details
Name: | ter_ChangeOfBusinessAcquisitionContingentConsiderationAtFairValue
Namespace Prefix: | ter_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Remaining accrual for lease payments. + References No definition available. + Details
Name: | ter_RemainingAccrualForLeasePayments
Namespace Prefix: | ter_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration