Inventory (Tables)

9 Months Ended

Sep. 30, 2018

Inventory [Line Items]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following:

	September 30,		December 31,
(in thousands)	2018		2017
Raw materials	$	1,525	$	1,717
Work in process	1,026		1,119
Finished goods	9,964		6,311
Total inventory	$	12,515	$	9,147