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Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1],[2] | $ 3,121,469 | $ 2,294,965 | $ 2,100,802
Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total |  | 2,259,597 | 1,552,571 | 1,492,417
System Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 409,729 | 287,455 | 216,132
Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total |  | 279,731 | 298,139 | 261,452
Wireless Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 173,016 | 157,315 | 132,006
Corporate and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | (604) | (515) | (1,205)
Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 2,804,166 | 1,993,077 | 1,815,171
Point in Time | System Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 348,454 | 237,686 | 167,418
Point in Time | Wireless Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 163,834 | 148,322 | 122,536
Point in Time | Corporate and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | (604) | (515) | (1,205)
Over Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 317,302 | 301,888 | 285,631
Over Time | System Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 61,275 | 49,769 | 48,714
Over Time | Wireless Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 9,182 | 8,993 | 9,470
Americas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 335,441 | 338,384 | 288,379
Americas | System Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 128,482 | 129,840 | 96,763
Americas | Wireless Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 22,544 | 24,234 | 19,166
Americas | Corporate and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | (604) | (515) | (1,205)
Europe, Middle East and Africa |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 208,196 | 228,071 | 235,977
Europe, Middle East and Africa | System Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 22,726 | 24,789 | 28,380
Europe, Middle East and Africa | Wireless Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 6,503 | 6,532 | 4,968
Asia Pacific |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 2,577,831 | 1,728,510 | 1,576,446
Asia Pacific | System Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 258,521 | 132,826 | 90,989
Asia Pacific | Wireless Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 143,969 | 126,549 | 107,872
SOC | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 1,877,389 | 1,286,440 | 1,218,949
SOC | Point in Time | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 1,659,414 | 1,070,375 | 1,010,493
SOC | Over Time | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 217,975 | 216,065 | 208,456
SOC | Americas | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 77,671 | 73,257 | 78,498
SOC | Europe, Middle East and Africa | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 55,125 | 60,302 | 72,572
SOC | Asia Pacific | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 1,744,593 | 1,152,881 | 1,067,879
Memory | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 382,208 | 266,131 | 273,468
Memory | Point in Time | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 363,324 | 247,221 | 259,366
Memory | Over Time | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 18,884 | 18,910 | 14,102
Memory | Americas | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 12,999 | 23,826 | 17,353
Memory | Europe, Middle East and Africa | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 5,209 | 3,591 | 10,851
Memory | Asia Pacific | Semiconductor Test |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 364,000 | 238,714 | 245,264
Universal Robots (UR) | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 221,481 | 252,358 | 237,337
Universal Robots (UR) | Point in Time | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 214,212 | 244,515 | 232,448
Universal Robots (UR) | Over Time | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 7,269 | 7,843 | 4,889
Universal Robots (UR) | Americas | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 64,164 | 71,926 | 70,478
Universal Robots (UR) | Europe, Middle East and Africa | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 97,040 | 112,405 | 108,367
Universal Robots (UR) | Asia Pacific | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 60,277 | 68,027 | 58,492
MiR | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 44,833 | 44,403 | 24,115
MiR | Point in Time | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 44,622 | 44,329 | 24,115
MiR | Over Time | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 211 | 74 |
MiR | Americas | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 16,769 | 14,438 | 7,326
MiR | Europe, Middle East and Africa | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 21,593 | 20,452 | 10,839
MiR | Asia Pacific | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 6,471 | 9,513 | $ 5,950
Autoguide LLC [Member] | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 13,417 | 1,378 |
Autoguide LLC [Member] | Point in Time | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 10,911 | 1,144 |
Autoguide LLC [Member] | Over Time | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | 2,506 | 234 |
Autoguide LLC [Member] | Americas | Industrial Automation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total | [1] | $ 13,417 | $ 1,378 |
[1] | Includes $10.0 million, $8.4 million and $12.0 million in 2020, 2019 and 2018, respectively, for leases of Teradyne’s systems recognized outside of ASC 606: “Revenue from Contracts with Customers.”
[2] | Revenues attributable to a country are based on location of customer site.

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