Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows From Operating Activities
Net income	$ 43,875	$ 39,822
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,217	23,007
Deferred compensation	4,957	(709)
Realized and unrealized gain on long-term investments	(1,010)	(438)
Stock-based compensation	1,591	1,777
Deferred income taxes	538	4,846
Other non-cash items	2,669	1,083
Changes in assets and liabilities:
Receivables, net	(19,725)	(83,875)
Inventories	(27,978)	(55,088)
Other current assets	(1,150)	(3,586)
Accounts payable and accrued liabilities	12,303	55,151
Pension liabilities	(1,646)	(895)
Environmental and legal liabilities	(143)	(412)
Deferred revenues	(662)	(890)
Excess tax benefit from stock options and awards	(2,070)	(1,113)
Net Cash Provided By (Used In) Operating Activities	36,766	(21,320)
Cash Flows From Investing Activities
Expenditures for property, plant and equipment	(40,798)	(40,400)
Business acquisition		(13,562)
Sale of mutual funds	537	1,613
Other, net	(1,662)	(2,136)
Net Cash Used In Investing Activities	(41,923)	(54,485)
Cash Flows From Financing Activities
Revolving debt and bank overdrafts, net	(810)	9,738
Build-to-suit obligation buyout		(12,206)
Other debt repayments	(2,827)	(2,291)
Dividends paid	(6,148)	(5,638)
Company stock repurchased	(500)	(1,000)
Stock option exercises	2,320	889
Payment to noncontrolling interest (Note 13)	(2,000)
Excess tax benefit from stock options and awards	2,070	1,113
Other, net	(1,256)	(1,265)
Net Cash Used In Financing Activities	(9,151)	(10,660)
Effect of Exchange Rate Changes on Cash	(268)	866
Net Decrease in Cash and Cash Equivalents	(14,576)	(85,599)
Cash and Cash Equivalents at Beginning of Period	84,099	111,198
Cash and Cash Equivalents at End of Period	69,523	25,599
Supplemental Cash Flow Information
Cash payments of income taxes, net of refunds	15,121	9,832
Cash payments of interest	$ 5,216	$ 4,122