Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 174,540	$ 53,533	$ 350,621
Trade accounts receivable, net	578,584	454,637	331,668
Inventories	743,286	721,290	712,854
Prepaid expenses and other current assets	72,127	62,462	48,356
Total current assets	1,568,537	1,291,922	1,443,499
Property, plant and equipment, net	1,502,880	1,489,872	1,166,609
Goodwill	1,183,678	1,171,454	607,004
Other intangible assets, net	413,240	417,088	177,907
Other assets, net	284,152	275,113	254,987
Assets, Total	4,952,487	4,645,449	3,650,006
Current liabilities:
Revolving loans and current portion of long-term debt	758,652	108,789	580,247
Trade accounts payable	552,707	659,629	390,288
Accrued payroll and related costs	66,764	66,257	42,943
Accrued liabilities	81,173	123,602	79,514
Total current liabilities	1,459,296	958,277	1,092,992
Long-term debt	2,174,709	2,438,502	1,591,764
Deferred income taxes	268,023	262,394	298,410
Other liabilities	225,668	220,211	176,514
Stockholders’ equity:
Common stock	1,751	1,751	876
Paid-in capital	265,022	262,201	252,128
Retained earnings	1,853,351	1,809,845	1,571,711
Accumulated other comprehensive loss	(174,707)	(188,973)	(216,110)
Treasury stock	(1,120,626)	(1,118,759)	(1,118,279)
Total stockholders’ equity	824,791	766,065	490,326
Liabilities and Equity, Total	$ 4,952,487	$ 4,645,449	$ 3,650,006