CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Net sales	$ 181,324us-gaap_Revenues	$ 180,307us-gaap_Revenues
Cost of goods sold	104,640us-gaap_CostOfGoodsSold	105,498us-gaap_CostOfGoodsSold
Gross profit	76,684us-gaap_GrossProfit	74,809us-gaap_GrossProfit
Selling, general, and administrative expenses	35,233	39,157
Technical, product engineering, and research expenses	12,301	13,869
Restructuring and other, net	9,001us-gaap_RestructuringCharges	1,182us-gaap_RestructuringCharges
Operating income	20,149us-gaap_OperatingIncomeLoss	20,601us-gaap_OperatingIncomeLoss
Interest expense, net	2,676	2,918
Other (income)/expenses, net	(3,285)us-gaap_OtherNonoperatingIncomeExpense	(467)us-gaap_OtherNonoperatingIncomeExpense
Income before income taxes	20,758	18,150
Income tax expense	8,519us-gaap_IncomeTaxExpenseBenefit	7,457us-gaap_IncomeTaxExpenseBenefit
Net income	12,239us-gaap_ProfitLoss	10,693us-gaap_ProfitLoss
Net income attributable to the noncontrolling interest	26	72
Net income attributable to the Company	$ 12,213us-gaap_NetIncomeLoss	$ 10,621us-gaap_NetIncomeLoss
Earnings per share attributable to Company shareholders - Basic	$ 0.38us-gaap_EarningsPerShareBasic	$ 0.33us-gaap_EarningsPerShareBasic
Earnings per share attributable to Company shareholders - Diluted	$ 0.38us-gaap_EarningsPerShareDiluted	$ 0.33us-gaap_EarningsPerShareDiluted
Shares of the Company used in computing earnings per share:
Basic	31,882	31,786
Diluted	31,972	31,892
Dividends per share	$ 0.16	$ 0.15

Technical, product engineering, and research expenses.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Total costs related to goods produced and sold during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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