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Operating Segment, Geographic and Significant Customer Information (Tables) | 12 Months Ended
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Dec. 31, 2014
Segment Information | Segment information for the years ended December 31, 2014, 2013 and 2012 is as follows:
|  | Semiconductor Test |  |  | Wireless Test |  |  | System Test |  |  | Corporate And Eliminations |  |  | Consolidated |
|  | (in thousands) |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 1,300,790 |  |  | $ | 184,535 |  |  | $ | 162,499 |  |  | $ | — |  |  | $ | 1,647,824 |
Income (Loss) before taxes (1)(2) |  |  | 255,803 |  |  |  | (116,196 | ) |  |  | 12,116 |  |  |  | (56,347 | ) |  |  | 95,376 |
Total assets (3) |  |  | 580,501 |  |  |  | 478,974 |  |  |  | 95,105 |  |  |  | 1,383,940 |  |  |  | 2,538,520 |
Property additions |  |  | 159,783 |  |  |  | 3,730 |  |  |  | 5,469 |  |  |  | — |  |  |  | 168,982 |
Depreciation and amortization expense |  |  | 84,990 |  |  |  | 53,308 |  |  |  | 5,399 |  |  |  | 8,847 |  |  |  | 152,544 |
2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 1,023,041 |  |  | $ | 251,871 |  |  | $ | 153,021 |  |  | $ | — |  |  | $ | 1,427,933 |
Income before taxes (1)(2) |  |  | 153,797 |  |  |  | 23,153 |  |  |  | 3,115 |  |  |  | 21,857 |  |  |  | 201,922 |
Total assets (3) |  |  | 632,840 |  |  |  | 645,001 |  |  |  | 79,983 |  |  |  | 1,272,000 |  |  |  | 2,629,824 |
Property additions |  |  | 94,303 |  |  |  | 5,358 |  |  |  | 7,070 |  |  |  | — |  |  |  | 106,731 |
Depreciation and amortization expense |  |  | 72,472 |  |  |  | 51,675 |  |  |  | 5,180 |  |  |  | 21,360 |  |  |  | 150,687 |
2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ | 1,127,726 |  |  | $ | 286,355 |  |  | $ | 242,669 |  |  | $ | — |  |  | $ | 1,656,750 |
Income (Loss) before taxes (1)(2) |  |  | 185,985 |  |  |  | 83,077 |  |  |  | 34,164 |  |  |  | (37,250 | ) |  |  | 265,976 |
Total assets (3) |  |  | 604,127 |  |  |  | 672,048 |  |  |  | 71,116 |  |  |  | 1,082,054 |  |  |  | 2,429,345 |
Property additions |  |  | 105,074 |  |  |  | 7,608 |  |  |  | 6,398 |  |  |  | — |  |  |  | 119,080 |
Depreciation and amortization expense |  |  | 73,537 |  |  |  | 50,362 |  |  |  | 4,549 |  |  |  | 17,066 |  |  |  | 145,514 |
(1) | Interest income, interest expense, other (income) expense, net and pension and postretirement plans actuarial gains and losses are included in Corporate and Eliminations.
(2) | Included in income (loss) before taxes are charges and credits related to restructuring and other, inventory charges and goodwill impairment charges.
(3) | Total business assets are directly attributable to each business. Corporate assets consist of cash and cash equivalents, marketable securities and certain other assets.
Revenues by Country | Information as to Teradyne’s revenues by country is as follows:
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Revenues from customers (1): |  |  |  |  |  |  |  |  |  |  |  |
Taiwan |  | $ | 495,942 |  |  | $ | 265,472 |  |  | $ | 299,359 |
China |  |  | 292,145 |  |  |  | 323,564 |  |  |  | 351,335 |
United States |  |  | 213,104 |  |  |  | 230,178 |  |  |  | 238,280 |
Korea |  |  | 145,608 |  |  |  | 119,286 |  |  |  | 216,445 |
Singapore |  |  | 119,421 |  |  |  | 114,765 |  |  |  | 101,502 |
Europe |  |  | 111,043 |  |  |  | 90,797 |  |  |  | 77,099 |
Malaysia |  |  | 83,910 |  |  |  | 86,900 |  |  |  | 69,064 |
Philippines |  |  | 68,662 |  |  |  | 63,392 |  |  |  | 111,571 |
Japan |  |  | 63,761 |  |  |  | 81,806 |  |  |  | 100,807 |
Thailand |  |  | 44,117 |  |  |  | 32,209 |  |  |  | 80,518 |
Rest of the World |  |  | 10,111 |  |  |  | 19,564 |  |  |  | 10,770 |
|  | $ | 1,647,824 |  |  | $ | 1,427,933 |  |  | $ | 1,656,750 |
(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, 2014 |  | $ | 206,334 |  |  | $ | 122,704 |  |  | $ | 329,038 |
December 31, 2013 |  | $ | 211,455 |  |  | $ | 63,781 |  |  | $ | 275,236 |
(1) | As of December 31, 2014 and 2013, long-lived assets attributable to Singapore were $99.2 million and $42.5 million, respectively.
Semiconductor Test |
Schedule of Segment Reporting Information by Segment Charges | Included in the Semiconductor Test segment are charges and credits in the following accounts:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Cost of revenues—inventory charge (1) |  | $ | 14,389 |  |  | $ | 5,218 |  |  | $ | 18,433 |
Restructuring and other |  |  | 490 |  |  |  | 1,016 |  |  |  | 386 |
(1) | Included in the cost of revenues for the years ended December 31, 2014 and 2012 are charges for excess inventory provisions recorded primarily as a result of product transition.
System Test |
Schedule of Segment Reporting Information by Segment Charges | Included in the System Test segment are charges and credits in the following accounts:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Cost of revenues—inventory charge |  | $ | 2,125 |  |  | $ | 4,168 |  |  | $ | 4,271 |
Restructuring and other |  |  | 742 |  |  |  | 1,431 |  |  |  | 451 |
Wireless Test |
Schedule of Segment Reporting Information by Segment Charges | Included in the Wireless Test segment are charges and credits in the following accounts:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Cost of revenues—inventory step-up (2) |  | $ | — |  |  | $ | — |  |  | $ | 6,089 |
Cost of revenues—inventory charge |  |  | 5,679 |  |  |  | 7,206 |  |  |  | 4,145 |
Restructuring and other |  |  | 565 |  |  |  | 82 |  |  |  | 236 |
Goodwill impairment charge |  |  | 98,897 |  |  |  | — |  |  |  | — |
(2) | Included in the cost of revenues for the years ended December 31, 2012 is the cost for purchase accounting inventory step-up.
Corporate And Eliminations |
Schedule of Segment Reporting Information by Segment Charges | Included in the Corporate and Eliminations segment are charges and credits in the following accounts:
|  | For the Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Restructuring and other |  | $ | (432 | ) |  | $ | (449 | ) |  | $ | (8,794 | )

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