Inventory (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventory

Provisions are made to reduce excess, obsolete or slow-moving inventories to their net realizable value. Inventories consisted of the following at December 31 (in thousands):

	2018		2017
Raw materials	$	19,670	$	20,119
Finished goods	14,093		25,346
Total inventory	$	33,763	$	45,465