CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 491,729	$ 381,336
Trade receivables, net	251,075	319,780
Inventories, net	339,862	344,458
Deferred income taxes	26,645	24,613
Prepaids and other current assets	31,280	54,111
Total current assets	1,140,591	1,124,298
Property, plant and equipment, net	293,857	294,251
Deferred income taxes	1,685	0
Other assets	11,717	9,701
Total assets	1,447,850	1,428,250
Current liabilities:
Accounts payable	20,311	30,934
Accrued income taxes	26,894	14,052
Customer prepayments	8,433	18,388
Accrued compensation	14,524	17,957
Other accrued liabilities	16,298	19,484
Total current liabilities	86,460	100,815
Deferred income taxes	2,899	2,977
Total liabilities	89,359	103,792
Commitments and contingencies
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, 37,563,379 and 37,951,223 shares issued and outstanding at June 30, 2016 and December 31, 2015	374	378
Additional paid-in capital	0	0
Retained earnings	1,480,733	1,425,344
Accumulated other comprehensive losses	(122,616)	(101,264)
Total stockholders’ equity	1,358,491	1,324,458
Total liabilities and stockholders’ equity	$ 1,447,850	$ 1,428,250