Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Current assets:
Cash and cash equivalents	$ 181,220	$ 53,533	$ 142,083
Trade accounts receivable, net	648,525	454,637	528,362
Inventories	833,719	721,290	830,887
Prepaid expenses and other current assets	63,361	62,462	68,026
Total current assets	1,726,825	1,291,922	1,569,358
Property, plant and equipment, net	1,480,390	1,489,872	1,452,569
Goodwill	1,158,910	1,171,454	1,160,624
Other intangible assets, net	399,590	417,088	424,437
Other assets, net	293,962	275,113	287,584
Assets, Total	5,059,677	4,645,449	4,894,572
Current liabilities:
Revolving loans and current portion of long-term debt	788,731	108,789	648,850
Trade accounts payable	609,164	659,629	455,457
Accrued payroll and related costs	65,493	66,257	64,573
Accrued liabilities	90,360	123,602	110,325
Total current liabilities	1,553,748	958,277	1,279,205
Long-term debt	2,173,941	2,438,502	2,444,912
Deferred income taxes	274,086	262,394	416,118
Other liabilities	219,892	220,211	211,330
Stockholders’ equity:
Common stock	1,751	1,751	1,751
Paid-in capital	268,559	262,201	255,077
Retained earnings	1,897,417	1,809,845	1,589,498
Accumulated other comprehensive loss	(208,963)	(188,973)	(185,139)
Treasury stock	(1,120,754)	(1,118,759)	(1,118,180)
Total stockholders’ equity	838,010	766,065	543,007
Liabilities and Equity, Total	$ 5,059,677	$ 4,645,449	$ 4,894,572