CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 413,102	$ 418,100
Trade receivables, net	235,619	202,165
Inventories, net	201,655	191,194
Prepaids and other current assets	28,343	41,522
Total current assets	878,719	852,981
Operating lease right of use assets	5,328
Property, plant and equipment, net	259,423	274,123
Deferred income taxes	8,012	7,995
Goodwill	7,384	7,714
Intangible assets	33,101	34,974
Other assets	13,668	14,723
Total assets	1,205,635	1,192,510
Current liabilities:
Accounts payable	45,785	26,693
Accrued income taxes	5,899	3,138
Customer prepayments	7,972	9,648
Accrued compensation	11,311	10,537
Operating lease liabilities	1,295
Other accrued liabilities	24,271	32,242
Total current liabilities	96,533	82,258
Deferred income taxes	2,259	2,466
Income tax payable	9,977	9,623
Operating lease liabilities, long-term	4,011
Other long-term liabilities	183	2,001
Total liabilities	112,963	96,348
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock: 10,000,000 shares authorized at $0.01 par value (none issued)
Common stock:
100,000,000 shares authorized at $0.01 par value, 36,180,104 and 36,264,001 shares issued and outstanding at September 30, 2019 and December 31, 2018	376	376
Additional paid-in capital	52,896	34,953
Retained earnings	1,194,824	1,205,946
Accumulated other comprehensive losses	(155,424)	(145,113)
Total stockholders' equity	1,092,672	1,096,162
Total liabilities and stockholders' equity	$ 1,205,635	$ 1,192,510