Consolidated Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Activities
Net income	$ 87,927us-gaap_ProfitLoss	$ 88,049us-gaap_ProfitLoss	$ 91,761us-gaap_ProfitLoss
Depreciation and amortization	29,921	30,764	31,702
Pension expense	4,836	12,268	3,673
Net gain from investing activities—asset disposals	(2,094)us-gaap_GainLossOnSaleOfOtherAssets	(436)us-gaap_GainLossOnSaleOfOtherAssets	(8,396)us-gaap_GainLossOnSaleOfOtherAssets
Stock-based compensation	9,053us-gaap_ShareBasedCompensation	10,337us-gaap_ShareBasedCompensation	10,010us-gaap_ShareBasedCompensation
Deferred income tax provision	(5,388)	(3,234)	213
Other noncurrent assets and liabilities	(53,482)	(18,162)	(14,104)
Currency exchange losses, net	1,393	5,127	3,151
Excess tax benefit related to stock plans	(2,573)	(2,246)	(2,799)
Other, net	(5,168)us-gaap_OtherNoncashIncomeExpense	4,386us-gaap_OtherNoncashIncomeExpense	1,103us-gaap_OtherNoncashIncomeExpense
Operating cash flow before changes in certain working capital items	64,425	126,853	116,314
(Increase) decrease in trade receivables	(23,480)	(13,171)	2,346
(Increase) decrease in inventories	(600)us-gaap_IncreaseDecreaseInInventories	(6,296)us-gaap_IncreaseDecreaseInInventories	2,677us-gaap_IncreaseDecreaseInInventories
Increase in accounts payable and accrued liabilities	56,988	10,732	17,776
Decrease (increase) in income taxes receivable, prepaid expenses and other current assets	9,698	(7,337)	11,363
Decrease (increase) in certain working capital items	42,606	(16,072)	34,162
Cash Flow From Operating Activities	107,031	110,781	150,476
Investing Activities
Capital expenditures	(33,583)	(36,517)	(32,209)
Property disposals	3,385	1,360	20,193
Other investing	(500)	0	(5,269)
Cash Flow From Investing Activities	(30,698)	(35,157)	(17,285)
Financing Activities
(Payments on) proceeds from short-term debt, net	(796)	662	(128)
Payments on long-term debt	(421,667)us-gaap_RepaymentsOfLongTermDebt	(306,766)us-gaap_RepaymentsOfLongTermDebt	(246,500)us-gaap_RepaymentsOfLongTermDebt
Proceeds from long-term debt	406,000	295,100	183,500
Restricted cash	86	(2,790)	0
Cash dividends paid	(45,586)us-gaap_PaymentsOfDividends	(43,994)us-gaap_PaymentsOfDividends	(50,990)us-gaap_PaymentsOfDividends
Distributions to noncontrolling interests	0	(556)	0
Company stock purchases	(5,654)us-gaap_PaymentsForRepurchaseOfEquity	(11,785)us-gaap_PaymentsForRepurchaseOfEquity	(3,508)us-gaap_PaymentsForRepurchaseOfEquity
Exercise of stock options	6,926	9,643	4,306
Excess tax benefit related to stock plans	2,573	2,246	2,799
Cash Flow From Financing Activities	(58,118)	(58,240)	(110,521)
Effect of exchange rate changes on cash and cash equivalents	(8,482)	(3,837)	110
Increase in cash and cash equivalents	9,733	13,547	22,780
Beginning cash and cash equivalents	96,265	82,718	59,938
Ending cash and cash equivalents	105,998	96,265	82,718
Supplemental cash flow information:
Interest payments	9,663us-gaap_InterestPaid	10,884us-gaap_InterestPaid	10,772us-gaap_InterestPaid
Income tax payments	$ 31,679us-gaap_IncomeTaxesPaid	$ 36,242us-gaap_IncomeTaxesPaid	$ 29,807us-gaap_IncomeTaxesPaid

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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-Name Accounting Standards Codification

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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-Publisher FASB

-Name Accounting Standards Codification

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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