Restructuring and Other	9 Months Ended
Sep. 30, 2018
Restructuring and Other	O. RESTRUCTURING AND OTHER During the three months ended September 30, 2018, Teradyne recorded $1.7 million for employee severance charges, primarily in Semiconductor Test, and $0.8 million of acquisition related compensation, partially offset by a $0.8 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability. During the nine months ended September 30, 2018, Teradyne recorded $7.9 million for employee severance charges, primarily in Semiconductor Test, and $4.1 million for acquisition related expenses and compensation, partially offset by a $9.2 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability. During the three months ended October 1, 2017, Teradyne recorded $5.1 million of property insurance recovery related to the Japan earthquake, a $0.4 million credit related to a previously impaired lease termination of a Wireless Test facility in Sunnyvale, CA, which was terminated in September 2017, 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 recorded for employee severance charges, primarily in Semiconductor Test. During the nine months ended October 1, 2017, Teradyne recorded $2.0 million for employee severance charges, primarily in Industrial Automation and Corporate, $1.8 million for the increase in the fair value of the Universal Robots contingent consideration liability, $0.9 million for a lease impairment of a Wireless Test facility in Sunnyvale, CA, which was terminated in September 2017, and $0.8 million of Japan earthquake related expenses, partially offset by $5.1 million of property insurance recovery related to the Japan earthquake.

O. RESTRUCTURING AND OTHER

During the three months ended September 30, 2018, Teradyne recorded $1.7 million for employee severance charges, primarily in Semiconductor Test, and $0.8 million of acquisition related compensation, partially offset by a $0.8 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability.

During the nine months ended September 30, 2018, Teradyne recorded $7.9 million for employee severance charges, primarily in Semiconductor Test, and $4.1 million for acquisition related expenses and compensation, partially offset by a $9.2 million gain for the decrease in the fair value of the Universal Robots contingent consideration liability.

During the three months ended October 1, 2017, Teradyne recorded $5.1 million of property insurance recovery related to the Japan earthquake, a $0.4 million credit related to a previously impaired lease termination of a Wireless Test facility in Sunnyvale, CA, which was terminated in September 2017, 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 recorded for employee severance charges, primarily in Semiconductor Test.

During the nine months ended October 1, 2017, Teradyne recorded $2.0 million for employee severance charges, primarily in Industrial Automation and Corporate, $1.8 million for the increase in the fair value of the Universal Robots contingent consideration liability, $0.9 million for a lease impairment of a Wireless Test facility in Sunnyvale, CA, which was terminated in September 2017, and $0.8 million of Japan earthquake related expenses, partially offset by $5.1 million of property insurance recovery related to the Japan earthquake.