Consolidated Statement Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Activities
Net income	$ 70,045	$ 39,059	$ 43,337
Depreciation and amortization	32,866	29,192	27,362
Pensions	(4,967)	(6,391)	(2,655)
Net gain from investing activities-disposal of assets	(2,840)	(3,703)	(3,498)
Stock-based compensation	7,732	7,335	5,860
Deferred income tax provision (benefit)	8,800	7,162	(3,376)
Other noncurrent assets and liabilities	(24,130)	(32,493)	(11,185)
Currency exchange losses (gains)	2,511	235	(888)
Other, net	(1,823)	(3,125)	(674)
Operating cash flow before changes in working capital	88,194	37,271	54,283
Trade receivables	(217)	(10,191)	33,050
Inventories	(1,230)	(10,744)	47,105
Accounts payable and accrued liabilities	(1,030)	7,683	(11,171)
Income taxes receivable, prepaid expenses and other current assets	(459)	7,587	(2,421)
Increase (decrease) in working capital	(2,936)	(5,665)	66,563
Cash Flow From Operating Activities	85,258	31,606	120,846
Investing Activities
Capital expenditures	(30,390)	(25,024)	(25,737)
Disposal of assets	18,687	5,699	5,084
Acquisitions, net of cash acquired and other investing		(262,250)	(123)
Cash Flow From Investing Activities	(11,703)	(281,575)	(20,776)
Financing Activities
Proceeds from (payments on) short-term debt, net	137	(6,169)	(45,085)
Proceeds from long-term debt	164,000	325,000
Payments on long-term debt	(199,000)	(40,000)	(12,000)
Cash dividends paid	(37,741)	(35,928)	(34,524)
Company stock purchases	(624)	(7,572)	(206)
Exercise of stock options	1,316	7,809	255
Excess tax benefit (provision) related to stock plans	632	3,462	(386)
Cash Flow From Financing Activities	(71,280)	246,602	(91,946)
Effect of exchange rate changes on cash and cash equivalents	(2,097)	1,144	2,965
Increase (decrease) in cash and cash equivalents	178	(2,223)	11,089
Beginning cash and cash equivalents	59,760	61,983	50,894
Ending cash and cash equivalents	59,938	59,760	61,983
Supplemental cash flow information:
Interest payments	13,969	8,379	7,304
Income tax payments	$ 21,739	$ 25,383	$ 8,404