CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net cash provided by operating activities	$ 77,834	$ 47,866
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition, net of cash acquired	(124,916)	(4,653)
Decrease in restricted cash	6,949	0
Purchases of property, plant and equipment	(30,780)	(42,889)
Purchases of equity securities	(5,563)	(3,413)
Purchases of short-term investments	(21,690)	0
Proceeds from sale of equity securities	7,458	0
Proceeds from sale of property, plant and equipment	58	1,966
Proceeds from sale of intangibles	0	2,122
Other	(958)	185
Net cash used by investing activities	(169,442)	(46,682)
CASH FLOWS FROM FINANCING ACTIVITIES
Advances on line of credit	10,196	2,629
Repayments on lines of credit	(30,029)	(8,000)
Borrowings of long-term debt	181,000	70,000
Repayments of long-term debt	(22,849)	(30,317)
Net proceeds from issuance of common stock	2,300	1,306
Other	(3,927)	(219)
Net cash provided by financing activities	136,691	35,399
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	2,010	2,173
INCREASE IN CASH AND CASH EQUIVALENTS	47,093	38,756
CASH AND CASH EQUIVALENTS, beginning of period	157,121	129,510
CASH AND CASH EQUIVALENTS, end of period	204,214	168,266
Non-cash financing activities:
Property, plant and equipment purchased on accounts payable	2,656	(5,963)
Acquisition:
Fair value of assets acquired	247,012
Liabilities assumed	92,277
Cash acquired	(29,819)
Net assets acquired	$ 124,916