CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
CASH PROVIDED BY OPERATING ACTIVITIES:
Net earnings	$ 47,910	$ 29,894
Income items not affecting cash:
Depreciation and amortization	12,489	16,470
Deferred income taxes	96	1,507
Stock-based compensation arrangements	4,757	8,756
Other non-cash items	(3,303)	(1,490)
Changes in operating assets and liabilities:
Decrease in accounts receivable, net	35,621	15,452
(Increase) decrease in inventories	(27,000)	5,424
Decrease in prepaid expenses and other current assets	4,966	422
Decrease (increase) in other assets	364	(10,729)
Increase in accounts payable	9,808	6,527
Increase (decrease) in deferred revenue	11	(4,431)
Decrease in accrued payroll and other current liabilities	(14,538)	(8,020)
Increase (decrease) in accrued income taxes	1,802	(1,097)
Increase in other long-term liabilities	1,944	1,140
Cash provided by operating activities	74,927	59,825
CASH USED BY INVESTING ACTIVITIES:
Additions to property and equipment, net	(13,139)	(9,590)
Cash used by investing activities	(13,139)	(9,590)
CASH USED BY FINANCING ACTIVITIES:
Repayments of long term debt, net	(3,750)	(3,750)
Repurchase of common stock	0	(1,766)
Dividends paid	(15,377)	(14,085)
Proceeds from shares issued pursuant to stock-based compensation plans	4,414	8,876
Excess tax benefit of stock options exercised	779	2,698
Other financing activities	(7)	252
Cash used by financing activities	(13,941)	(7,775)
Effect of exchange rate changes on cash	(31,441)	(841)
Net increase in cash and cash equivalents	16,406	41,619
Cash and cash equivalents, beginning of period	531,374	542,476
Cash and cash equivalents, end of period	$ 547,780	$ 584,095