Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Current assets:
Cash and cash equivalents	$ 120,467	$ 99,945	$ 126,676
Trade accounts receivable, net	394,811	281,041	443,943
Inventories	806,539	628,138	753,335
Prepaid expenses and other current assets	45,602	36,134	35,855
Total current assets	1,367,419	1,045,258	1,359,809
Property, plant and equipment, net	1,165,141	1,125,433	1,082,712
Goodwill	614,021	612,792	620,481
Other intangible assets, net	188,773	195,087	203,863
Other assets, net	218,821	214,109	236,252
Assets, Total	3,554,175	3,192,679	3,503,117
Current liabilities:
Revolving loans and current portion of long-term debt	569,892	152,398	532,639
Trade accounts payable	365,854	477,171	375,037
Accrued payroll and related costs	48,585	45,094	55,086
Accrued liabilities	93,955	106,550	74,774
Total current liabilities	1,078,286	781,213	1,037,536
Long-term debt	1,365,205	1,361,149	1,437,863
Other liabilities	421,278	411,133	444,692
Stockholders’ equity:
Common stock	876	876	876
Paid-in capital	243,515	237,291	232,117
Retained earnings	1,485,093	1,446,193	1,368,956
Accumulated other comprehensive loss	(202,296)	(208,806)	(182,779)
Treasury stock	(837,782)	(836,370)	(836,144)
Total stockholders’ equity	689,406	639,184	583,026
Liabilities and Equity, Total	$ 3,554,175	$ 3,192,679	$ 3,503,117