Inventories:

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Inventories [Text Block]

Inventories

Inventories consisted of the following (in thousands): 

	September 30, 2018		December 31, 2017
Raw material	$	71,511	$	82,397
Work in process	64,137		42,304
Finished goods	156,192		163,956
Total inventories	$	291,840	$	288,657