Interim Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net earnings	$ 121,606	$ 114,031
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	17,447	16,106
Amortization	10,929	10,556
Deferred tax provision	(5,687)	(4,758)
Excess tax benefits from share-based payment arrangements	(519)	(340)
Share-based compensation	5,852	5,954
Other	408	1,258
Increase (decrease) in cash resulting from changes in:
Trade accounts receivable, net	12,583	23,645
Inventories	(8,158)	21,832
Other current assets	(5,690)	2,220
Trade accounts payable	(19,806)	(37,727)
Taxes payable	(2,820)	4,369
Accruals and other	(11,513)	(45,097)
Net cash provided by operating activities	114,632	112,049
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	115	153
Purchase of property, plant and equipment	(36,781)	(43,233)
Acquisitions	(213)	(1,541)
Net cash used in investing activities	(36,879)	(44,621)
Cash flows from financing activities:
Proceeds from borrowings	211,112	81,552
Repayments of borrowings	(136,330)	(127,351)
Proceeds from stock option exercises	12,549	13,264
Repurchases of common stock	(144,844)	(135,766)
Excess tax benefits from share - based payment arrangements	519	340
Other financing activities	(1,170)	(543)
Net cash used in financing activities	(58,164)	(168,504)
Effect of exchange rate changes on cash and cash equivalents	(1,074)	241
Net (decrease) increase in cash and cash equivalents	18,515	(100,835)
Cash and cash equivalents:
Beginning of period	101,702	235,601
End of period	$ 120,217	$ 134,766