Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Current assets
Cash and cash equivalents	$ 166,961	$ 168,514	$ 204,171
Trade accounts receivable, net	192,981	135,958	159,571
Inventories	279,503	252,996	244,476
Assets held-for-sale	9,251	0	0
Other current assets	12,220	26,473	13,276
Total current assets	660,916	583,941	621,494
Property, plant and equipment, net	257,679	273,020	265,178
Goodwill	136,459	137,140	137,313
Equity investment	2,498	2,549	2,582
Intangible assets, net	25,457	29,326	30,050
Other noncurrent assets	11,604	11,547	11,766
Total Assets	1,094,613	1,037,523	1,068,383
Current liabilities
Capital lease obligations - current portion	1,081	1,055	1,047
Trade accounts payable	42,734	31,536	30,857
Accrued liabilities	103,979	87,430	91,854
Accrued profit sharing trust contributions	6,565	7,054	5,652
Accrued cash profit sharing and commissions	13,092	9,416	13,123
Total current liabilities	167,451	136,491	142,533
Other long-term liabilities - net of current portion	13,743	16,254	9,808
Total liabilities	181,194	152,745	152,341
Commitments and contingencies (see Note 11)
Stockholders’ equity
Common stock, at par value	462	473	476
Additional paid-in capital	274,126	260,157	265,490
Retained Earnings	686,351	676,644	683,554
Treasury stock	(24,491)	(40,000)	(20,000)
Accumulated other comprehensive loss	(23,029)	(12,496)	(13,478)
Total stockholders’ equity	913,419	884,778	916,042
Total liabilities and stockholders’ equity	$ 1,094,613	$ 1,037,523	$ 1,068,383