CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH PROVIDED BY OPERATING ACTIVITIES:
Net earnings	$ 98,410	$ 74,652
Income items not affecting cash:
Depreciation and amortization	24,611	30,706
Deferred income taxes	142	915
Stock-based compensation arrangements	12,938	17,203
Other non-cash items	(823)	(3,599)
Changes in operating assets and liabilities:
Decrease in accounts receivable, net	22,594	15,929
Increase in inventories	(44,072)	(7,414)
Decrease in prepaid expenses and other current assets	489	233
Decrease (increase) in other assets	1,610	(12,188)
Increase in accounts payable	24,539	14,764
Increase (decrease) in deferred revenue	2,303	(3,761)
(Decrease) increase in accrued payroll and other current liabilities	(28,170)	5,473
Increase (decrease) in accrued income taxes	5,230	(3,937)
Increase in other long-term liabilities	4,058	1,437
Cash provided by operating activities	123,859	130,413
CASH USED BY INVESTING ACTIVITIES:
Additions to property and equipment, net	(30,753)	(25,828)
Cash used by investing activities	(30,753)	(25,828)
CASH USED BY FINANCING ACTIVITIES:
Repayments of long term debt, net	(7,500)	(7,500)
Repurchase of common stock	(31,426)	(43,003)
Dividends paid	(30,774)	(28,245)
Proceeds from shares issued pursuant to stock-based compensation plans	19,636	28,969
Excess tax benefit of stock options exercised	4,041	6,559
Other financing activities	(8)	(14)
Cash used by financing activities	(46,031)	(43,234)
Effect of exchange rate changes on cash	(18,259)	(1,754)
Net increase in cash and cash equivalents	28,816	59,597
Cash and cash equivalents, beginning of period	531,374	542,476
Cash and cash equivalents, end of period	$ 560,190	$ 602,073