Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows provided by (used in) operating activities:
Net income	$ 77,696	$ 101,067
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	104,102	97,903
Rationalization charges	45,400	1,195
Stock compensation expense	8,244	7,420
Loss on early extinguishment of debt	0	2,493
Other changes that provided (used) cash:
Trade accounts receivable, net	(155,198)	(134,961)
Inventories	(187,790)	(176,222)
Trade accounts payable	(19,421)	45,232
Accrued liabilities	(22,875)	(29,125)
Other, net	20,764	(7,886)
Net cash used in operating activities	(129,078)	(92,884)
Cash flows provided by (used in) investing activities:
Capital expenditures	(116,165)	(91,278)
Other, net	560	486
Net cash used in investing activities	(115,605)	(90,792)
Cash flows provided by (used in) financing activities:
Borrowings under revolving loans	703,359	848,686
Repayments under revolving loans	(287,368)	(132,386)
Repayments of long-term debt	(8,161)	(284,638)
Changes in outstanding checks - principally vendors	(83,670)	(87,795)
Dividends paid on common stock	(26,415)	(22,417)
Debt issuance costs	0	(2,866)
Repurchase of common stock under stock plan	(15,252)	(3,057)
Net cash provided by financing activities	282,493	315,527
Effect of exchange rate changes on cash and cash equivalents	712	(4,164)
Cash and cash equivalents:
Net increase	38,522	127,687
Balance at beginning of year	72,819	53,533
Balance at end of period	111,341	181,220
Interest paid, net	53,069	62,192
Income taxes paid, net	$ 23,634	$ 31,303