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Acquisition-Related Amortization and Remeasurement (Tables)
 3 Months Ended
Mar. 31, 2021
Acquisition Related Amortization And Remeasurement [Abstract]  
Components of Acquisition-Related Amortization and Remeasurement Components of acquisition-related amortization and remeasurement are as follows:

 

 

Three Months Ended

March 31,

 

(U.S. Dollars, in thousands)

 

2021

 

 

2020

 

Changes in fair value of contingent consideration

 

$

1,500

 

 

$

(9,000

)

Amortization of acquired intangibles

 

 

1,969

 

 

 

1,418

 

Acquired in-process research and development

 

 

1,000

 

 

 

—

 

Total

 

$

4,469

 

 

$

(7,582

)