Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories were as follows:

(U.S. Dollars, in thousands)	March 31, 2021		December 31, 2020
Raw materials	$	9,816	$	8,442
Work-in-process		15,219		12,149
Finished products		19,997		29,142
Field/consignment		39,148		34,902
Inventories	$	84,180	$	84,635