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Summarize Impact of ASC 606 to Condensed Consolidated Statement of Operation (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | [2],[3] | Sep. 30, 2018 | [3],[4] | Jul. 01, 2018 | [3],[5] | Apr. 01, 2018 | [6] | Dec. 31, 2017 | [7],[8] | Oct. 01, 2017 | [8],[9] | Jul. 02, 2017 | [8],[10] | Apr. 02, 2017 | [11] | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | [1] |  |  |  |  |  |  |  |  | $ 2,100,802 | $ 2,136,606 | $ 1,753,250
Total cost of revenues |  |  |  |  |  |  |  |  |  | 880,408 |  |
Income tax provision |  | $ (32,662) | $ 20,863 | $ 18,975 | $ 8,846 | $ 204,007 | $ 24,017 | $ 31,901 | $ 6,795 | 16,022 | 266,720 | (11,639)
Net income |  | $ 143,790 | $ 119,978 | $ 101,037 | $ 86,974 | $ (105,923) | $ 103,420 | $ 174,976 | $ 85,221 | $ 451,779 | $ 257,692 | $ (43,421)
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ 0.80 | $ 0.65 | $ 0.53 | $ 0.45 | $ (0.54) | $ 0.52 | $ 0.88 | $ 0.43 | $ 2.41 | $ 1.30 | $ (0.21)
Diluted |  | $ 0.79 | $ 0.63 | $ 0.52 | $ 0.43 | $ (0.54) | $ 0.52 | $ 0.87 | $ 0.42 | $ 2.35 | $ 1.28 | $ (0.21)
ASU 2014-09 |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  | $ 2,088,800 |  |
ASU 2014-09 | Adjustments to Recognize Under Legacy GAAP |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  | (39,184) |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  | (10,760) |  |
Income tax provision |  |  |  |  |  |  |  |  |  | (4,197) |  |
Net income |  |  |  |  |  |  |  |  |  | $ (24,227) |  |
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  |  |  |  |  |  |  |  | $ (0.13) |  |
Diluted |  |  |  |  |  |  |  |  |  | $ (0.13) |  |
ASU 2014-09 | Legacy GAAP |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  | $ 2,061,618 |  |
Total cost of revenues |  |  |  |  |  |  |  |  |  | 869,648 |  |
Income tax provision |  |  |  |  |  |  |  |  |  | 11,825 |  |
Net income |  |  |  |  |  |  |  |  |  | $ 427,552 |  |
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  |  |  |  |  |  |  |  | $ 2.28 |  |
Diluted |  |  |  |  |  |  |  |  |  | $ 2.22 |  |
[1] | Revenues attributable to a country are based on location of customer site.
[2] | Restructuring and other includes a $17.7 million fair value adjustment to increase the MiR acquisition contingent consideration, $0.8 million of employee severance charges, and $0.5 million acquisition related expenses and compensation, partially offset by a $7.4 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability.
[3] | Teradyne recorded pension and post retirement net actuarial (gains) losses of $(0.1) million, $0.3 million and $(3.5) million for the second, third and fourth quarter in 2018, respectively. See Note B: “Accounting Policies” for a discussion of Teradyne’s accounting policy.
[4] | Restructuring and other includes $1.7 million of employee severance charges, $0.8 million of acquisition related expenses and compensation, partially offset by a $0.8 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability.
[5] | Restructuring and other includes a $5.0 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability, partially offset by $3.9 million of employee severance charges and $0.8 million of acquisition related expenses and compensation.
[6] | Restructuring and other includes a $3.5 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability, partially offset by $2.5 million of acquisition related expenses and compensation and $2.4 million of employee severance charges.
[7] | Restructuring and other includes a $6.0 million fair value adjustment to increase the Universal Robots acquisition contingent consideration, $1.8 million of employee severance charges, and $1.1 million of charges for impairment of fixed assets.
[8] | Teradyne recorded pension and post retirement net actuarial gains of $2.8 million and $3.8 million for the second and fourth quarter in 2017, respectively. See Note B: “Accounting Policies” for a discussion of Teradyne’s accounting policy.
[9] | Restructuring and other includes $5.1 million of property insurance recovery related to the Japan earthquake, a $0.4 million credit related to previously impaired lease termination of a Wireless Test facility in Sunnyvale, CA, and a $0.3 million credit for the decrease in the fair value of the Universal Robots contingent consideration liability, partially offset by $0.8 million of Japan earthquake related expenses and $0.6 million of employee severance charges.
[10] | Restructuring and other includes a $1.5 million charge for a fair value adjustment to increase the Universal Robots acquisition contingent consideration, and $0.8 million of employee severance charges.
[11] | Restructuring and other includes a $1.3 million charge for a lease impairment of a Wireless Test facility in Sunnyvale, CA, a $0.6 million fair value adjustment to increase the Universal Robots acquisition contingent consideration, and $0.6 million of employee severance charges.

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