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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2014 | Dec. 31, 2016 | Oct. 02, 2016 | Jul. 03, 2016 | Apr. 03, 2016 | Dec. 31, 2015 | Oct. 04, 2015 | Jul. 05, 2015 | Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment charge |  |  | $ 0 |  |  |  | $ 254,946 | [1],[2] |  |  |  |  |  |  |  |  | $ 98,897 | $ 254,946 | $ (254,946) | $ 98,897
Acquired intangible assets impairment charge |  |  |  |  |  |  | 83,339 | [1],[2] |  |  |  |  |  |  |  |  |  | 83,339 | 98,200 |
Restructuring and other |  |  | 5,570 | [2],[3] | $ 12,177 | [2],[4] | 2,608 | [1],[2] | $ 1,587 | [2],[5] | $ 5,204 | [6],[7] | $ 261 | [8] | $ (385) | [9] |  | 21,942 | 5,080 | 1,365
Contingent consideration adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,896 | 2,489 | (630)
Property insurance recovery |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,363) |  |
Other (income) expense, net-Gain from the sale of an equity investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,406) |
Stock based compensation expense |  | $ 6,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,750 | 30,451 | 40,307
Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  | 1,400 |  |  |  |  |  |  |  |  |  |  |  |  |
Building impairment and other expenses |  |  |  |  |  |  | 4,200 |  |  |  |  |  |  |  |  |  |  |  |  |
Selling and Administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,139 | 18,024 | 26,486
Universal Robots |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  | $ 5,400 |  | $ 8,000 |  |  |  | $ 1,200 |  | 5,339 |  |  |  |  |  |  | 15,300 | 5,300 |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |
Universal Robots | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  | 800 |  |  |  |  |  |  |  |  |  |  |  |  |
Avionics Interface Technologies, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  |  |  |  |  | $ (300) |  | $ (1,000) |  |  |  |  | 600 | (1,300) |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400
Avionics Interface Technologies, LLC | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  | 600 |  |  |  |  |  |  |  |  |  |  |  |  |
ZTEC Instruments, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (1,600) |  |  |  | (1,600) | (600)
System Test |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment charge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |
Cost of revenues-inventory charge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 630 | 8,324 | 2,125
Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (49) | 1,037 | 742
Corporate And Eliminations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 198
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,896 | (1,813) | 6,538
Corporate And Eliminations | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property insurance recovery |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,363) |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,104 | 372
Corporate And Eliminations | Other (income) expense, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other (income) expense, net-Gain from the sale of an equity investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,406) |
Corporate And Eliminations | Selling and Administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense | [10] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,598
Corporate And Eliminations | Impairment of fixed assets and expenses related to the Japan earthquake | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Building impairment and other expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,363 |  |
Corporate And Eliminations | Universal Robots | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,346 | 5,339 |
Corporate And Eliminations | Avionics Interface Technologies, LLC | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 550 | (1,250) |
Corporate And Eliminations | ZTEC Instruments, Inc. | Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,600) | (630)
Industrial Automation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues-inventory charge | [11] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,567 |
Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 585 |  |
Wireless Test |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment charge |  |  |  |  |  |  | $ 254,946 |  |  |  |  |  |  |  |  |  |  | 254,946 | (254,946) | 98,897
Acquired intangible assets impairment charge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 83,339 |  |
Cost of revenues-inventory charge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,207 | 2,500 | 5,679
Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,650 |  | 565
Semiconductor Test |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues-inventory charge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,656 | 10,508 | 14,389
Restructuring and other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,860 | $ 499 | $ 490
[1] | Restructuring and other includes $4.2 million for an impairment of fixed assets, $0.9 million for expenses related to an earthquake in Kumamoto, Japan, and $1.4 million for the increase in the fair value of contingent consideration liability of which $0.8 million related to Universal Robots, and $0.6 million related to AIT, partially offset by $5.1 million of property insurance recovery related to the Japan earthquake.
[2] | Teradyne recorded pension and post retirement net actuarial (gains) losses of $(1.2) million, $(0.7) million, $0.7 million and $(2.0) million for the first, second, third and fourth quarter in 2016, respectively. See Note B: "Accounting Policies" for a discussion of Teradyne's accounting policy.
[3] | Restructuring and other includes a $5.4 million fair value adjustment to increase the Universal Robots acquisition contingent consideration.
[4] | Restructuring and other includes an $8.0 million fair value adjustment to increase the Universal Robots acquisition contingent consideration.
[5] | Restructuring and other includes a $1.2 million fair value adjustment to increase the Universal Robots acquisition contingent consideration.
[6] | In the fourth quarter ended December 31, 2015, Teradyne recorded pension and post retirement net actuarial losses of $17.7 million. See Note B: "Accounting Policies" for a discussion of Teradyne's accounting policy.
[7] | Restructuring and other includes a $5.3 million fair value adjustment to increase the Universal Robots acquisition contingent consideration, and a $(0.3) million fair value adjustment to decrease the AIT acquisition contingent consideration.
[8] | Restructuring and other includes a $(1.0) million fair value adjustment to decrease the AIT acquisition contingent consideration.
[9] | Restructuring and other includes a $(1.6) million fair value adjustment to decrease the ZTEC acquisition contingent consideration.
[10] | Expense related to the January 2014 retirement of Teradyne's former chief executive officer; see Note O: "Stock-Based Compensation."
[11] | Included in the cost of revenues for the year ended December 31, 2015 is the cost for purchase accounting inventory step-up.

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