CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 321,616	$ 336,732
Restricted cash	3,120	4,367
Short-term investments	9,042	7,059
Accounts receivable, net of allowances of $5,634 and $5,852 at June 30, 2023 and December 31, 2022, respectively	393,132	369,233
Inventories	325,733	360,281
Prepaid expenses and other	107,746	83,999
Total current assets	1,160,389	1,161,671
Property, plant and equipment, net	748,115	736,730
Deferred income tax	35,354	35,308
Goodwill	146,138	144,757
Intangible assets, net	71,496	79,137
Other long-term assets	179,579	130,709
Total assets	2,341,071	2,288,312
Current liabilities:
Lines of credit	33,729	36,280
Accounts payable	152,192	160,442
Accrued liabilities and other	198,882	214,433
Income tax payable	27,004	19,682
Current portion of long-term debt	1,149	1,693
Total current liabilities	412,956	432,530
Long-term debt, net of current portion	54,575	147,470
Deferred tax liabilities	13,550	12,903
Unrecognized tax benefits	31,594	31,594
Other long-term liabilities	97,818	80,896
Total liabilities	610,493	705,393
Commitments and contingencies (See Note 9)
Stockholders' equity
Preferred stock - par value $1.00 per share; 1,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock - par value $0.66 2/3 per share; 70,000,000 shares authorized; and 45,748,940 shares and 45,469,722 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	36,690	36,503
Additional paid-in capital	501,302	494,773
Retained earnings	1,601,262	1,448,092
Treasury stock at cost 9,283,481 shares and 9,281,581 shares at June 30, 2023 and December 31, 2022, respectively	(337,670)	(337,490)
Accumulated other comprehensive loss	(139,104)	(128,233)
Total stockholders' equity	1,662,480	1,513,645
Noncontrolling interest	68,098	69,274
Total equity	1,730,578	1,582,919
Total liabilities and stockholders' equity	$ 2,341,071	$ 2,288,312