Interim Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net earnings	$ 238,965	$ 204,772
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	19,390	18,606
Amortization	24,548	23,705
Deferred tax benefit	(14,881)	(10,109)
Share-based compensation	8,820	8,236
Other	(30)	(1,200)
Increase (decrease) in cash resulting from changes in:
Trade accounts receivable, net	36,674	34,509
Inventories	(16,848)	(19,959)
Other current assets	(9,748)	844
Trade accounts payable	(36,216)	5,425
Taxes payable	(487)	1,268
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(24,322)	(49,338)
Net cash provided by operating activities	225,865	216,759
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	1,216	4,530
Purchase of property, plant and equipment	(44,699)	(61,586)
Acquisitions	(504)	(500)
Payments for (Proceeds from) Derivative Instrument, Investing Activities	(1,226)	7,042
Net cash used in investing activities	(45,213)	(50,514)
Cash flows from financing activities:
Proceeds from borrowings	638,830	603,180
Repayments of borrowings	(532,729)	(502,524)
Proceeds from stock option exercises	37,757	9,960
Repurchases of common stock	(372,500)	(237,499)
Payment for Contingent Consideration Liability, Financing Activities	(10,000)	0
Proceeds from (Payments for) Other Financing Activities	1,753	(1,635)
Net cash used in financing activities	(236,889)	(128,518)
Effect of exchange rate changes on cash and cash equivalents	2,566	(3,224)
Net (decrease) increase in cash and cash equivalents	(53,671)	34,503
Cash and cash equivalents:
Beginning of period	178,110	148,687
End of period	$ 124,439	$ 183,190