CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 587,643	$ 258,390
Short-term investments	3,014	4,825
Accounts receivable, net of allowances of $3,056 and $4,866 at September 30, 2020 and December 31, 2019, respectively	261,782	260,322
Inventories	260,289	236,472
Prepaid expenses and other	101,961	49,950
Total current assets	1,214,689	809,959
Property, plant and equipment, net	453,487	469,574
Deferred income tax	23,566	17,516
Goodwill	155,492	141,318
Intangible assets, net	114,306	119,523
Other long-term assets	71,112	81,494
Total assets	2,032,652	1,639,384
Current liabilities:
Line of credit	70,746	13,342
Accounts payable	127,315	122,148
Accrued liabilities and other	103,259	100,571
Income tax payable	5,235	16,156
Current portion of long-term debt	14,978	33,105
Total current liabilities	321,533	285,322
Long-term debt, net of current portion	330,766	64,401
Deferred tax liabilities	14,445	16,333
Other long-term liabilities	114,857	120,545
Total liabilities	781,601	486,601
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
Common stock - par value $0.66 2/3 per share; 70,000,000 shares authorized; 51,945,299 and 51,206,969, issued and outstanding at September 30, 2020 and December 31, 2019, respectively	35,628	35,111
Additional paid-in capital	440,944	427,262
Retained earnings	858,311	789,958
Treasury stock at cost, 1,494,080 and 1,457,206, at September 30, 2020 and December 31, 2019, respectively	(39,205)	(37,768)
Accumulated other comprehensive loss	(97,105)	(108,139)
Total stockholders' equity	1,198,573	1,106,424
Noncontrolling interest	52,478	46,359
Total equity	1,251,051	1,152,783
Total liabilities and stockholders' equity	$ 2,032,652	$ 1,639,384