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Restructuring and Other (Tables) | 3 Months Ended
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Mar. 31, 2013
Restructuring and Other | As of March 31, 2013, Teradyne subleased approximately 20% of its unoccupied space.
|  | Severance and Benefits |  |  | Facility Exit Costs |  |  | Total |
|  | (in thousands) |
Pre-2012 Activities |  |  |  |  |  |  |  |  |  |  |  |
Balance at December 31, 2011 |  | $ | 325 |  |  | $ | 1,862 |  |  | $ | 2,187 |
Cash payments |  |  | (325 | ) |  |  | (778 | ) |  |  | (1,103 | )
Balance at December 31, 2012 |  |  | — |  |  |  | 1,084 |  |  |  | 1,084 |
Change in estimate |  |  | — |  |  |  | (105 | ) |  |  | (105 | )
Cash payments |  |  | — |  |  |  | (183 | ) |  |  | (183 | )
Balance at March 31, 2013 |  | $ | — |  |  | $ | 796 |  |  | $ | 796 |
2012 Activities |  |  |  |  |  |  |  |  |  |  |  |
Q2 2012 Activity: |  |  |  |  |  |  |  |  |  |  |  |
Provision |  | $ | 286 |  |  | $ | — |  |  | $ | 286 |
Change in estimate |  |  | (4 | ) |  |  | — |  |  |  | (4 | )
Cash payments |  |  | (282 | ) |  |  | — |  |  |  | (282 | )
Balance at December 31, 2012 |  | $ | — |  |  | $ | — |  |  | $ | — |
Q3 2012 Activity: |  |  |  |  |  |  |  |  |  |  |  |
Provision |  | $ | 687 |  |  | $ | — |  |  | $ | 687 |
Cash payments |  |  | (444 | ) |  |  | — |  |  |  | (444 | )
Balance at December 31, 2012 |  |  | 243 |  |  |  | — |  |  |  | 243 |
Cash payments |  |  | (243 | ) |  |  | — |  |  |  | (243 | )
Balance at March 31, 2013 |  | $ | — |  |  | $ | — |  |  | $ | — |
2013 Activities |  |  |  |  |  |  |  |  |  |  |  |
Q1 2013 Activity: |  |  |  |  |  |  |  |  |  |  |  |
Provision |  | $ | 437 |  |  | $ | — |  |  | $ | 437 |
Cash payments |  |  | (194 | ) |  |  | — |  |  |  | (194 | )
Balance at March 31, 2013 |  | $ | 243 |  |  | $ | — |  |  | $ | 243 |
Balance at March 31, 2013 |  | $ | 243 |  |  | $ | 796 |  |  | $ | 1,039 |

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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -Subparagraph b(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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