Inventories (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2013
Inventories [Abstract]
Inventory write-down charges	$ 11,500	$ 3,100	$ 3,400
Direct restructuring charges (Note 4)	$ 3,985