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Acquisition-Related Amortization and Remeasurement (Tables)
 9 Months Ended
Sep. 30, 2019
Acquisition Related Amortization And Remeasurement [Abstract]  
Components of Acquisition-Related Amortization and Remeasurement Components of acquisition-related amortization and remeasurement for the three months and nine months ended September 30, 2019 and 2018, respectively, are as follows:

 

 

 

Three Months Ended

September 30,

 

 

Nine Months Ended

September 30,

 

(U.S. Dollars, in thousands)

 

2019

 

 

2018

 

 

2019

 

 

2018

 

Changes in fair value of contingent consideration

 

$

22,270

 

 

$

1,580

 

 

$

28,140

 

 

$

2,689

 

Amortization of acquired intangibles

 

 

1,338

 

 

 

429

 

 

 

3,733

 

 

 

802

 

Total

 

$

23,608

 

 

$

2,009

 

 

$

31,873

 

 

$

3,491