Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 segment	Jun. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of reportable segments			2
Net sales	$ 746,059	$ 686,527	$ 1,433,588	$ 1,341,537
Depreciation expense	90,805	81,891	179,973	161,988
Gross profit	138,379	89,320	253,332	194,301
Capital additions	158,854	149,415	283,124	273,350
Property, plant and equipment, gross	4,752,527		4,752,527		4,599,053
Packaging [Member]
Segment Reporting Information [Line Items]
Net sales	646,793	610,667	1,240,168	1,192,178
Depreciation expense	62,711	58,881	124,364	116,801
Gross profit	107,207	67,998	190,708	155,301
Capital additions	106,243	67,303	169,906	120,854
Property, plant and equipment, gross	3,499,459		3,499,459		3,372,071
Test [Member]
Segment Reporting Information [Line Items]
Net sales	99,266	75,860	193,420	149,359
Depreciation expense	28,094	23,010	55,609	45,187
Gross profit	31,172	21,322	62,624	39,000
Capital additions	39,681	35,147	79,847	84,229
Property, plant and equipment, gross	1,136,553		1,136,553		1,076,513
Other [Member]
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Depreciation expense	0	0	0	0
Gross profit	0	0	0	0
Capital additions	12,930	46,965	33,371	68,267
Property, plant and equipment, gross	$ 116,515		$ 116,515		$ 150,469