Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 213,015	$ 319,526
Short-term investments	81,021	0
Accounts receivables, net	127,210	167,417
Inventories, net	76,420	139,079
Assets held for sale	3,792	0
Other current assets	10,437	14,027
Total current assets	511,895	640,049
Property, plant and equipment, net	469,646	567,024
Goodwill	211,040	211,063
Intangible assets, net	33,895	45,083
Deferred tax assets, net	0	79,309
Other assets	35,293	45,533
Total assets	1,261,769	1,588,061
Current liabilities:
Short-term debt	4,721	276
Accounts payable	33,912	16,081
Deferred revenue	4,703	18,072
Accrued and other current liabilities	74,973	64,950
Total current liabilities	118,309	99,379
Deferred tax liabilities	229	20,951
Other non-current liabilities	27,330	156,412
Total liabilities	145,868	276,742
Commitments and contingencies (Note 18)
Stockholders' equity:
Common stock, €0.01 par value, 798,096,000 shares authorized, 224,228,071 and 223,161,356 shares issued and 223,289,389 and 222,401,427 shares outstanding	2,814	2,802
Additional paid-in capital	1,050,873	1,036,786
Retained earnings	106,923	317,270
Accumulated other comprehensive loss	(30,972)	(32,977)
Treasury stock (at cost), 938,682 and 759,929 shares	(13,737)	(12,562)
Total stockholders' equity	1,115,901	1,311,319
Total liabilities and equity	$ 1,261,769	$ 1,588,061

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).