Segment Information, Significant Geographical Areas and Long Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue by geographical area and long-lived assets [Abstract]
Revenue	$ 572,200	$ 571,300	$ 560,200	$ 543,300	$ 609,600	$ 638,800	$ 650,000	$ 671,100	$ 2,247,047	$ 2,569,495	$ 3,176,718
Japan [Member]
Revenue by geographical area and long-lived assets [Abstract]
Revenue									264,214	315,265	402,580
Long-lived assets	13,587				13,768				13,587	13,768
Mainland China [Member]
Revenue by geographical area and long-lived assets [Abstract]
Revenue									565,527	675,082	1,005,395
Long-lived assets	110,839				103,445				110,839	103,445
South Korea [Member]
Revenue by geographical area and long-lived assets [Abstract]
Revenue									422,341	467,720	466,820
Long-lived assets	48,702				46,626				48,702	46,626
United States [Member]
Revenue by geographical area and long-lived assets [Abstract]
Revenue									243,748	230,767	268,232
Long-lived assets	$ 271,057				$ 287,103				271,057	287,103
Europe [Member]
Revenue by geographical area and long-lived assets [Abstract]
Revenue									$ 137,186	$ 180,572	$ 195,061