CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 268,065	$ 258,390
Restricted cash	52,464	1,117
Short-term investments	6,142	4,825
Accounts receivable, net of allowances of $3,806 and $4,866 at December 31, 2020 and 2019, respectively	320,061	260,322
Inventories	307,062	236,472
Prepaid expenses and other current assets	70,193	48,833
Total current assets	1,023,987	809,959
Property, plant and equipment, net	530,815	469,574
Deferred income tax	57,841	17,516
Goodwill	158,331	141,318
Intangible assets, net	110,591	119,523
Other long-term assets	97,892	81,494
Total assets	1,979,457	1,639,384
Current liabilities:
Line of credit	140,563	13,342
Accounts payable	168,045	122,148
Accrued liabilities	160,117	100,571
Income tax payable	19,177	16,156
Current portion of long-term debt	21,860	33,105
Total current liabilities	509,762	285,322
Long-term debt, net of current portion	288,179	64,401
Deferred tax liabilities	34,598	16,333
Other long-term liabilities	130,795	120,545
Total liabilities	963,334	486,601
Commitments and contingencies (See Note 17)
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; 44,276,194 and 51,206,969, issued and outstanding at December 31, 2020 and 2019, respectively	35,692	35,111
Additional paid-in capital	449,598	427,262
Retained earnings	888,046	789,958
Treasury stock, at cost; 9,259,858 and 1,457,206, issued and outstanding at December 31, 2020 and 2019, respectively	(335,910)	(37,768)
Accumulated other comprehensive loss	(73,606)	(108,139)
Total stockholders' equity	963,820	1,106,424
Noncontrolling interest	52,303	46,359
Total equity	1,016,123	1,152,783
Total liabilities and stockholders' equity	$ 1,979,457	$ 1,639,384