Business Segments (Business Segments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	$ 2,206,476	$ 2,006,553
Net sales	3,129,440	2,956,450	2,759,546
CHINA
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	575,207	524,967
Net sales	270,282	47,202	28,641
IRELAND
Segment Reporting Information [Line Items]
Net sales	175,095	97,180	110,529
JAPAN
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	145	10,799
Net sales	268,420	394,834	349,360
KOREA, REPUBLIC OF
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	948,192	916,777
MALAYSIA
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	50,137	61,080
PHILIPPINES
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	301,291	240,187
SINGAPORE
Segment Reporting Information [Line Items]
Net sales	432,942	496,601	452,737
TAIWAN, PROVINCE OF CHINA
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	317,192	236,178
Net sales	212,719	144,825	99,047
THAILAND
Segment Reporting Information [Line Items]
Net sales	104,608	116,376	139,134
Other Foreign Countries [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	293	93
Net sales	533,951	454,218	437,148
Total Foreign Countries [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	2,192,457	1,990,081
Net sales	1,998,017	1,751,236	1,616,596
UNITED STATES
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	14,019	16,472
Net sales	1,131,423	1,205,214	1,142,950
Customer One [Member] | Sales [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	17.50%	23.70%	21.30%
Customer Two [Member] | Sales [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	13.20%	10.50%
Advanced Products [Member]
Segment Reporting Information [Line Items]
Net sales	1,552,948	1,451,664	1,302,145
Mainstream Products [Member]
Segment Reporting Information [Line Items]
Net sales	$ 1,576,492	$ 1,504,786	$ 1,457,401