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Restructuring (Tables)
6 Months Ended
Jun. 30, 2019
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
Restructuring costs for the three months ended June 30, 2019 were as follows:

Three Months Ended June 30, 2019
Write-off of equipment and facility $7,131 
Facility exit costs 2,686 
Employee separations1,364 
Inventory write-downs1,442 
   Total restructuring charges $12,623 
Schedule of Restructuring Reserve by Type of Cost
The following table summarizes the components of restructuring activities and the remaining balances of accrued restructuring charges as of June 30, 2019:


Employee Separation BenefitsFacility Exit Costs Total
Accrual balance at December 31, 2018 $— $— $— 
Charges 1,364 2,686 4,050 
Cash payments— — — 
Accrual balance at June 30, 2019$1,364 $2,686 $4,050 

The balance of accrued restructuring charges are expected to be settled within the next twelve months.