Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories were as follows:

(U.S. Dollars, in thousands)	June 30, 2015		December 31, 2014
Raw materials	$	4,200	$	3,879
Work-in-process		5,071		4,830
Finished products		44,309		45,612
Deferred cost of sales		5,639		5,525
Total inventory	$	59,219	$	59,846