CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net cash provided by operating activities	$ 98,453	$ 107,325
Cash flows from investing activities
Purchase TF Semiconductor Solutions, net of cash acquired	(1,033)
Decrease in restricted cash	527	1,278
Purchases of property, plant and equipment	(94,994)	(37,081)
Proceeds from sales of property, plant, and equipment	129	1,428
Purchases of equity securities	(4,553)	(1,842)
Purchases of short-term investments	(36,784)
Proceeds from maturity of short-term investments	23,156	8,516
Proceeds from sale of equity securities	3,968	562
Other	304	518
Net cash used in investing activities	(109,280)	(26,621)
Cash flows from financing activities
Advances on lines of credit and short-term debt	1,713	6,120
Repayments on lines of credit and short-term debt	(2,512)	(9,849)
Debt issuance costs	(1,158)
Repayments of long-term debt	(47,216)	(35,831)
Net proceeds from issuance of common stock	9,906	5,729
Repayment of capital lease obligation and other	(178)	(159)
Net cash used in financing activities	(39,445)	(33,990)
Effect of exchange rate changes on cash and cash equivalents	(3,973)	(6,500)
Increase (decrease) in cash and cash equivalents	(54,245)	40,214
Cash and cash equivalents, beginning of period	243,000	196,635
Cash and cash equivalents, end of period	188,755	236,849
Non-cash financing activities:
Property, plant and equipment purchased on accounts payable	(24,607)	$ (5,298)
Acquisition of TF Semiconductor Solutions:
Total assets acquired	8,697
Total liabilities assumed	$ 86