CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH PROVIDED BY OPERATING ACTIVITIES:
Net earnings	$ 166,626	$ 241,686	$ 200,261
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	57,513	49,534	57,245
Deferred income taxes	5,613	2,863	(1,242)
Stock-based compensation arrangements	27,797	25,748	30,788
Gain on sale of assets, net	0	(19,166)	(4,129)
Other, net	11,992	7,722	(791)
Increase (decrease) in cash, net of acquisitions, resulting from changes in:
Accounts receivable	(10,704)	28,258	(76,705)
Inventories	51,170	(74,816)	11,363
Prepaid expenses	(7,706)	1,858	5,754
Other assets	10,750	4,333	24,261
Accounts payable	(33,465)	38,660	15,040
Deferred revenue	2,928	3,503	93
Accrued payroll and other liabilities	(16,138)	(20,072)	17,240
Accrued income taxes	64,822	(9,319)	(8,501)
Pension & other long term liabilities	2,582	3,688	4,089
Net cash provided by operating activities	312,280	275,814	226,244
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property and equipment	(35,940)	(68,234)	(61,262)
Business acquisitions, net of cash acquired	(419,203)	(92,260)	0
Proceeds from sale of assets	7,331	25,649	12,000
Net cash used by investing activities	(447,812)	(134,845)	(49,262)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds of long-term debt, including current portion	524,560	0	0
Repayment of long-term debt	(367,435)	(15,000)	(15,000)
Repurchase of common stock	(66,057)	(123,193)	(139,238)
Dividends paid	(65,920)	(61,399)	(56,513)
Proceeds from shares issued pursuant to stock-based compensation plans	11,966	24,835	47,581
Excess tax benefit of stock options exercised	1,480	8,243	11,161
Other financing activities	13	(24)	(18)
Net cash provided (used) by financing activities	38,607	(166,538)	(152,027)
Effect of exchange rate changes on cash	(14,511)	(33,020)	(36,057)
Net decrease in cash and cash equivalents	(111,436)	(58,589)	(11,102)
Cash and cash equivalents, beginning of year	472,785	531,374	542,476
Cash and cash equivalents, end of year	$ 361,349	$ 472,785	$ 531,374