Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows provided by (used in) operating activities:
Net income	$ 57,600	$ 46,742
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	51,090	51,232
Rationalization charges	2,799	6,083
Stock compensation expense	4,483	3,909
Loss on early extinguishment of debt	1,481	0
Other changes that provided (used) cash, net of effects from acquisition:
Trade accounts receivable, net	(103,975)	(88,594)
Inventories	(68,965)	(53,793)
Trade accounts payable	(126,728)	(81,242)
Accrued liabilities	20,443	(51,321)
Other, net	(6,364)	11,198
Net cash used in operating activities	(168,136)	(155,786)
Cash flows provided by (used in) investing activities:
Purchase of business, net of cash acquired	(39,828)	0
Capital expenditures	(65,147)	(61,746)
Other, net	534	20
Net cash used in investing activities	(104,441)	(61,726)
Cash flows provided by (used in) financing activities:
Borrowings under revolving loans	877,114	614,103
Repayments under revolving loans	(48,970)	(205,856)
Proceeds from issuance of long-term debt	739,661	0
Repayments of long-term debt	(766,170)	(8,161)
Changes in outstanding checks - principally vendors	(79,006)	(83,670)
Dividends paid on common stock	(13,771)	(14,161)
Debt issuance costs	(7,544)	0
Repurchase of common stock under stock plan	(12,664)	(15,046)
Net cash provided by financing activities	688,650	287,209
Effect of exchange rate changes on cash and cash equivalents	(5,051)	(1,116)
Cash and cash equivalents:
Net increase	411,022	68,581
Balance at beginning of year	203,824	72,819
Balance at end of period	614,846	141,400
Interest paid, net	23,518	39,969
Income taxes paid, net	$ 22,056	$ 16,933