CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 102,917	$ 102,640
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	72,042	66,059
Amortization	4,235	2,166
Stock based compensation	14,405	13,983
Provision for doubtful accounts	245	362
Deferred income taxes	35	(2,465)
Defined benefit plan expense	8,423	10,294
Equity in results of affiliates	172	526
Changes in balance sheet items, excluding effects from foreign currency adjustments:
Accounts receivables	(80,728)	(50,289)
Inventories	(16,757)	(23,058)
Prepaid and other current assets	(18,541)	(16,381)
Accounts payable and accrued liabilities	7,698	38,885
Income taxes payable	(683)	(3,222)
Retirement and deferred compensation plan liabilities	(13,296)	(3,832)
Other changes, net	5,894	4,509
Net Cash Provided by Operations	86,061	140,177
Cash Flows from Investing Activities:
Capital expenditures	(56,942)	(60,306)
Proceeds from sale of property and equipment, including insurance proceeds	1,446	1,983
Purchase of short-term investments		(66,897)
Maturity of short-term investments	29,485
Acquisition of business, net of cash acquired	(202,985)
Acquisition of intangible assets	(2,493)
Notes receivable, net	324	(701)
Net Cash Used by Investing Activities	(231,165)	(125,921)
Cash Flows from Financing Activities:
Proceeds from (repayments of) notes payable	59,330	(227,512)
Proceeds from long-term obligations	78	225,887
Repayments of long-term obligations	(2,343)	(1,539)
Dividends paid	(37,717)	(34,929)
Credit facility costs		(1,216)
Proceeds from stock option exercises	37,102	28,810
Common stock repurchased and retired	(48,683)
Excess tax benefit from exercise of stock options	6,884	4,575
Net Cash Provided (Used) by Financing Activities	14,651	(5,924)
Effect of Exchange Rate Changes on Cash	2,216	(16,284)
Net decrease in Cash and Equivalents	(128,237)	(7,952)
Cash and Equivalents at Beginning of Period	489,901	399,762
Cash and Equivalents at End of Period	$ 361,664	$ 391,810

The amount of the payments for the repurchase and retirement of common stock.

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The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Costs and payments related to employee benefits and equity-based compensation, such as pension expense and contributions, other postretirement benefits expense and payments, stock or unit options expense, and amortization of restricted stock or unit.

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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

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The increase (decrease) during the reporting period in other assets used in operating activities less other operating liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets and liabilities, other noncurrent assets and liabilities, or a combination of other current and noncurrent assets and liabilities.

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The increase (decrease) during the reporting period in the amount due to fund pension and non-pension benefits to employees, retired and disabled former employees.

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The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

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The cash inflow from sales, maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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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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