Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories were as follows:

(U.S. Dollars, in thousands)	June 30, 2016		December 31, 2015
Raw materials	$	7,070	$	4,976
Work-in-process		9,442		5,087
Finished products		40,484		42,947
Deferred cost of sales		4,338		4,553
Total inventory	$	61,334	$	57,563