Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Current assets:
Cash and cash equivalents	$ 141,400	$ 72,819	$ 174,540
Trade accounts receivable, net	596,601	511,332	578,584
Inventories	686,213	634,806	743,286
Prepaid expenses and other current assets	70,622	71,177	72,127
Total current assets	1,494,836	1,290,134	1,568,537
Property, plant and equipment, net	1,511,718	1,517,510	1,502,880
Goodwill	1,141,202	1,148,302	1,183,678
Other intangible assets, net	374,809	383,448	413,240
Other assets, net	402,008	239,900	284,152
Assets, Total	4,924,573	4,579,294	4,952,487
Current liabilities:
Revolving loans and current portion of long-term debt	578,001	170,214	758,652
Trade accounts payable	536,909	712,739	552,707
Accrued payroll and related costs	61,874	68,773	66,764
Accrued liabilities	122,001	127,342	81,173
Total current liabilities	1,298,785	1,079,068	1,459,296
Long-term debt	2,113,575	2,134,400	2,174,709
Deferred income taxes	273,345	268,036	268,023
Other liabilities	338,661	216,525	225,668
Stockholders’ equity:
Common stock	1,751	1,751	1,751
Paid-in capital	276,435	276,062	265,022
Retained earnings	2,031,487	1,997,785	1,853,351
Accumulated other comprehensive loss	(272,431)	(268,808)	(174,707)
Treasury stock	(1,137,035)	(1,125,525)	(1,120,626)
Total stockholders’ equity	900,207	881,265	824,791
Liabilities and Equity, Total	$ 4,924,573	$ 4,579,294	$ 4,952,487