CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 218,349	$ 241,053
Short-term investments	7,928	7,499
Accounts receivable, net of allowances of $4,726 and $4,102 at September 30, 2019 and December 31, 2018, respectively	257,421	228,405
Inventories	230,815	215,435
Assets held for sale	4,947
Prepaid expenses and other	43,575	42,446
Total current assets	763,035	734,838
Property, plant and equipment, net	468,122	446,835
Deferred income tax	28,975	31,652
Goodwill	138,020	132,437
Intangible assets, net	125,446	137,935
Other	86,215	42,674
Total assets	1,609,813	1,526,371
Current liabilities:
Line of credit	17,086	10,254
Accounts payable	117,226	117,808
Accrued liabilities and other	106,456	82,605
Income tax payable	25,404	15,744
Current portion of long-term debt	31,532	27,613
Total current liabilities	297,704	254,024
Long-term debt, net of current portion	87,939	186,143
Deferred tax liabilities	18,661	17,993
Other long-term liabilities	128,411	90,779
Total liabilities	532,715	548,939
Commitments and contingencies (See Note 8)
Stockholders' equity
Preferred stock - par value $1.00 per share; 1,000,000 shares authorized; no shares issued or outstanding
Common stock - par value $0.66 2/3 per share; 70,000,000 shares authorized; 51,012,794 and 50,221,035, issued and outstanding at September 30, 2019 and December 31, 2018, respectively	34,982	34,454
Additional paid-in capital	417,576	399,915
Retained earnings	742,768	636,708
Treasury stock, at cost, 1,457,206 shares held at September 30, 2019 and December 31, 2018	(37,768)	(37,768)
Accumulated other comprehensive loss	(127,705)	(101,846)
Total stockholders' equity	1,029,853	931,463
Noncontrolling interest	47,245	45,969
Total equity	1,077,098	977,432
Total liabilities and stockholders' equity	$ 1,609,813	$ 1,526,371