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Operating Segment, Geographic and Significant Customer Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Segment Information | Segment information for the years ended December 31, 2021, 2020, and 2019 is as follows:
|  | Semiconductor Test |  |  | System Test |  |  | Industrial Automation |  |  | Wireless Test |  |  | Corporate and Other |  |  | Consolidated |
|  | (in thousands) |
2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 2,642,342 |  |  | $ | 467,739 |  |  | $ | 375,905 |  |  | $ | 216,895 |  |  | $ | — |  |  | $ | 3,702,881 |
Income (loss) before taxes (1)(2) |  |  | 976,988 |  |  |  | 163,064 |  |  |  | (8,167 | ) |  |  | 83,543 |  |  |  | (54,473 | ) |  |  | 1,160,955 |
Total assets (3) |  |  | 1,245,596 |  |  |  | 170,954 |  |  |  | 701,196 |  |  |  | 107,513 |  |  |  | 1,584,166 |  |  |  | 3,809,425 |
Property additions |  |  | 115,618 |  |  |  | 3,905 |  |  |  | 9,821 |  |  |  | 3,128 |  |  |  | — |  |  |  | 132,472 |
Depreciation and amortization expense |  |  | 75,982 |  |  |  | 3,156 |  |  |  | 27,336 |  |  |  | 6,055 |  |  |  | 12,956 |  |  |  | 125,485 |
2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 2,259,597 |  |  | $ | 409,729 |  |  | $ | 279,731 |  |  | $ | 173,016 |  |  | $ | (604 | ) |  | $ | 3,121,469 |
Income (loss) before taxes (1)(2) |  |  | 739,695 |  |  |  | 152,092 |  |  |  | (24,019 | ) |  |  | 41,950 |  |  |  | (8,703 | ) |  |  | 901,015 |
Total assets (3) |  |  | 1,070,378 |  |  |  | 138,295 |  |  |  | 712,936 |  |  |  | 106,273 |  |  |  | 1,624,464 |  |  |  | 3,652,346 |
Property additions |  |  | 168,055 |  |  |  | 3,092 |  |  |  | 8,899 |  |  |  | 4,931 |  |  |  | — |  |  |  | 184,977 |
Depreciation and amortization expense |  |  | 64,998 |  |  |  | 3,426 |  |  |  | 36,242 |  |  |  | 6,258 |  |  |  | 15,819 |  |  |  | 126,743 |
2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 1,552,571 |  |  | $ | 287,455 |  |  | $ | 298,139 |  |  | $ | 157,315 |  |  | $ | (515 | ) |  | $ | 2,294,965 |
Income (loss) before taxes (1)(2) |  |  | 416,973 |  |  |  | 93,543 |  |  |  | (5,916 | ) |  |  | 35,585 |  |  |  | (14,413 | ) |  |  | 525,772 |
Total assets (3) |  |  | 784,808 |  |  |  | 131,428 |  |  |  | 671,559 |  |  |  | 97,299 |  |  |  | 1,101,920 |  |  |  | 2,787,014 |
Property additions |  |  | 112,145 |  |  |  | 3,059 |  |  |  | 9,076 |  |  |  | 10,362 |  |  |  | — |  |  |  | 134,642 |
Depreciation and amortization expense |  |  | 59,197 |  |  |  | 5,518 |  |  |  | 40,904 |  |  |  | 5,365 |  |  |  | 9,671 |  |  |  | 120,655 |
(1) | Included in Corporate and Other are: loss on convertible debt conversions, contingent consideration adjustments, investment impairment, interest income, interest expense, pension and postretirement plan actuarial gains (losses), severance charges, net foreign exchange gains (losses), intercompany eliminations and acquisition related: (a) charges; (b) legal fees; (c) compensation.
(2) | Included in income (loss) before taxes are charges and credits related to restructuring and other, loss on convertible debt conversions and inventory charges.
(3) | Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.
Schedule of Segment Reporting Information by Segment Charges | Included in each segment are charges and credits in the following line items in the statements of operations:
|  | For the Year s Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
|  | (in thousands) |
Semiconductor Test: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues—inventory charge |  | $ | 6,661 |  |  | $ | 11,013 |  |  | $ | 8,731 |
Contract termination settlement fe e |  |  | — |  |  |  | 4,000 |  |  |  | — |
Restructuring and other—employee severance |  |  | — |  |  |  | — |  |  |  | 1,277 |
System Test: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues—inventory charge |  | $ | 641 |  |  | $ | 887 |  |  | $ | 2,000 |
Industrial Automation: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues—inventory charge |  | $ | 6,403 |  |  | $ | 834 |  |  | $ | 508 |
Restructuring and other—employee severance |  |  | 1,210 |  |  |  | 1,584 |  |  |  | 796 |
Restructuring and other—acquisition related expenses and compensation |  |  | 1,000 |  |  |  | 985 |  |  |  | 741 |
Wireless: |  |  |  |  |  |  |  |  |  |  |  |
Cost of revenues—inventory charge |  | $ | 1,770 |  |  | $ | 4,800 |  |  | $ | 4,005 |
Corporate and Other: |  |  |  |  |  |  |  |  |  |  |  |
Other (income) expense, net—loss on convertible debt conversion |  | $ | 28,828 |  |  | $ | — |  |  | $ | — |
Restructuring and other—other |  |  | 13,971 |  |  |  | — |  |  |  | — |
Restructuring and other—AutoGuide contingent consideration adjustment |  |  | (7,227 | ) |  |  | (19,724 | ) |  |  | 2,976 |
Restructuring and other—acquisition related expenses and compensation |  |  | (513 | ) |  |  | 1,728 |  |  |  | 1,765 |
Restructuring and other—MiR contingent consideration adjustment |  |  | — |  |  |  | (3,546 | ) |  |  | (22,199 | )
Other (income) expense, net—investment impairment charge |  |  | — |  |  |  | — |  |  |  | 15,000 |
Selling and administrative—equity modification charge |  |  | — |  |  |  | 766 |  |  |  | 2,108 |
Revenues by Country | Information as to Teradyne’s revenues by country is as follows:
|  | 2021 |  |  | 2020 |  |  | 2019 |
|  | (in thousands) |
Revenues from customers (1): |  |  |  |  |  |  |  |  |  |  |  |
Taiwan |  | $ | 1,117,874 |  |  | $ | 1,178,068 |  |  | $ | 485,681 |
China |  |  | 631,963 |  |  |  | 465,722 |  |  |  | 514,327 |
Korea |  |  | 502,167 |  |  |  | 391,571 |  |  |  | 239,504 |
United States |  |  | 392,626 |  |  |  | 321,674 |  |  |  | 333,059 |
Europe |  |  | 259,954 |  |  |  | 205,587 |  |  |  | 219,015 |
Philippines |  |  | 166,838 |  |  |  | 68,887 |  |  |  | 54,560 |
Japan |  |  | 166,231 |  |  |  | 143,983 |  |  |  | 175,322 |
Thailand |  |  | 138,812 |  |  |  | 138,787 |  |  |  | 87,503 |
Malaysia |  |  | 136,774 |  |  |  | 56,096 |  |  |  | 58,200 |
Singapore |  |  | 121,582 |  |  |  | 76,460 |  |  |  | 84,111 |
Rest of the World |  |  | 68,060 |  |  |  | 74,634 |  |  |  | 43,683 |
|  | $ | 3,702,881 |  |  | $ | 3,121,469 |  |  | $ | 2,294,965 |
(1) | Revenues attributable to a country are based on location of customer site.
Long-Lived Assets by Geographic Area | Long-lived assets by geographic area:
|  | United States |  |  | Foreign(1) |  |  | Total |
|  | (in thousands) |
December 31, 2021 |  | $ | 308,438 |  |  | $ | 147,609 |  |  | $ | 456,047 |
December 31, 2020 |  | $ | 291,234 |  |  | $ | 158,135 |  |  | $ | 449,369 |
(1) | As of December 31, 2021 and 2020, long-lived assets attributable to Singapore were $39.4 million and $62.5 million, respectively.

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