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Restructuring Costs (Tables)
 12 Months Ended
Dec. 31, 2020
Restructuring And Related Activities [Abstract]  
Restructuring and Related Costs

The following table shows the costs incurred by type of restructuring activity:

Year ended December 31

 

2020

 

 

2019

 

 

2018

 

 

 

(In thousands)

 

Severance benefits

 

$

9,350

 

 

$

—

 

 

$

—

 

Asset impairments and lease termination costs

 

 

2,538

 

 

 

—

 

 

 

—

 

Gain on fair value remeasurement of cost and equity method investments

 

 

(1,099

)

 

 

—

 

 

 

—

 

Liquidation dividend from a cost method investment

 

 

(1,247

)

 

 

—

 

 

 

—

 

Gain on sale of internet protocol addresses

 

 

(1,409

)

 

 

—

 

 

 

—

 

Total restructuring and other costs, net

 

$

8,133

 

 

$

—

 

 

$

—