CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 424,053	$ 493,180
Trade receivables, net	190,437	191,629
Inventories, net	242,123	291,087
Prepaids and other current assets	40,837	32,653
Total current assets	897,450	1,008,549
Property, plant and equipment, net	292,667	284,247
Deferred income taxes	5,512	5,364
Goodwill	47,120	47,624
Intangible assets	35,535	38,408
Other assets	14,475	15,613
Total assets	1,292,759	1,399,805
Current liabilities:
Accounts payable	21,155	33,480
Accrued income taxes	4,583	24,714
Customer prepayments	7,489	4,767
Accrued compensation	11,478	11,412
Other accrued liabilities	23,557	25,538
Total current liabilities	68,262	99,911
Deferred income taxes	3,211	3,432
Income tax payable	28,029	0
Other long-term liabilities	2,001	2,001
Total liabilities	101,503	105,344
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock: 10,000,000 shares authorized at $0.01 par value (none issued)	0	0
Common stock:
100,000,000 shares authorized at $0.01 par value, 36,152,694 and 38,132,693 shares issued and outstanding at September 30, 2018 and December 31, 2017	394	372
Additional paid-in capital	31,002	20,083
Treasury shares (at cost)	(71,107)	0
Retained earnings	1,371,368	1,400,296
Accumulated other comprehensive losses	(140,401)	(126,290)
Total stockholders' equity	1,191,256	1,294,461
Total liabilities and stockholders' equity	$ 1,292,759	$ 1,399,805