Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 39,898	$ 71,589
Depreciation and amortization	248,716	220,389
Loss on debt retirement	(2,530)	0
Gain on sale of subsidiary to J-Devices	0	9,155
Other operating activities and non-cash items	(14,179)	(24,000)
Changes in assets and liabilities	(48,684)	(23,570)
Net cash provided by operating activities	228,281	235,253
Cash flows from investing activities:
Payments for property, plant and equipment	(194,360)	(230,392)
Proceeds from sale of property, plant and equipment	4,069	1,634
Cash received (transferred) on sale of subsidiary to J-Devices, net	8,355	(15,774)
Investment in J-Devices	(12,908)	0
Purchase of short-term investment	0	20,000
Proceeds from short-term investment	0	20,000
Other investing activities	(1,315)	(353)
Net cash used in investing activities	(196,159)	(244,885)
Cash flows from financing activities:
Borrowings under revolving credit facilities	180,000	0
Payments under revolving credit facilities	30,000	0
Proceeds from issuance of long-term debt	340,000	80,000
Payments of long-term debt	(530,000)	(140,000)
Payment of deferred consideration for an acquisition	0	(18,763)
Proceeds from the issuance of stock through share-based compensation plans	656	4,826
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	656	4,826
Payments of tax withholding for restricted shares	(427)	(1,006)
Adjustments Related to Tax Withholding for Share-based Compensation	427	1,006
Net cash used in financing activities	(39,771)	(74,943)
Effect of exchange rate fluctuations on cash and cash equivalents	0	68
Net decrease in cash and cash equivalents	(7,649)	(84,507)
Cash and cash equivalents, beginning of period	449,946	610,442
Cash and cash equivalents, end of period	442,297	525,935
Non cash investing and financing activities:
Property, plant and equipment included in capital expenditures payable	210,319	252,786
Common stock issuance for conversion and exchange in 2014 of 6.0% Convertible senior subordinated notes due April 2014	$ 0	$ 56,350