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Schedule of Segment Reporting Information by Segment Charges (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Restructuring and other-employee severance | $ 9,312 | $ (13,202) | $ (13,880)
Contingent consideration adjustment | (7,227) | (23,271) | (19,257)
Investment impairment | 0 | 0 | 15,000
Other (income) expense, net—loss on convertible debt conversion | (24,572) | (9,192) | (22,648)
Semiconductor Test |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition related costs | 500 | 2,500 | 2,500
Cost of revenues-inventory charge |  |  | 1,277
Restructuring and other-employee severance | 6,661 |  |
Contingent consideration adjustment |  | 3,500 |
Contract termination settlement fee |  | 4,000 |
Semiconductor Test | Mobile Industrial Robots (MiR) |  |  |
Segment Reporting Information [Line Items] |  |  |
Contingent consideration adjustment |  |  | 22,200
Semiconductor Test | Severance And Benefits |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring and other-employee severance |  | 11,013 | 8,731
Industrial Automation |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition related costs | 1,000 | 985 | 741
Cost of revenues-inventory charge | 641 | 887 | 2,000
Restructuring and other-employee severance | 1,210 | 1,584 | 796
Industrial Automation | Restructuring and other |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition related costs | (513) | 1,728 |
Industrial Automation | Severance And Benefits |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring and other-employee severance |  |  | 1,765
System Test |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of revenues-inventory charge | 6,403 | 834 | 508
Wireless Test |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of revenues-inventory charge | 1,770 | 4,800 | 4,005
Corporate And Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring and other | 13,971 |  |
Selling and administrative – equity modification charge |  | 766 | 2,108
Investment impairment |  |  | 15,000
Corporate And Eliminations | Restructuring and other |  |  |
Segment Reporting Information [Line Items] |  |  |
Other (income) expense, net—loss on convertible debt conversion | 28,828 |  |
Corporate And Eliminations | Mobile Industrial Robots (MiR) | Restructuring and other |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring and other-lease impairment |  | (3,546) | (22,199)
Contingent consideration adjustment | $ (7,227) | $ (19,724) | $ 2,976

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460 + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=124268079&loc=d3e32787-111569 + Details
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