CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 336,997	$ 264,093
Short-term investments	28,369	31,109
Accounts receivable, net	698,477	508,355
Inventory, net	166,307	103,595
Assets held for sale	37,052	76,668
Other current assets	180,134	172,019
Total current assets	1,447,336	1,155,839
Property, plant and equipment, net	6,109,565	6,267,583
Goodwill	173,226	166,917
Deferred income taxes	419,003	366,586
Other long-term assets	252,854	230,090
Total assets	8,401,984	8,187,015
Current liabilities:
Current portion of debt	181	297
Trade accounts payable	363,416	264,578
Accrued liabilities	533,044	543,248
Income taxes payable	22,835	13,811
Total current liabilities	919,476	821,934
Long-term debt	4,027,766	3,578,335
Other long-term liabilities	301,633	522,456
Deferred income taxes	10,338	9,495
Total liabilities	5,259,213	4,932,220
Commitments and contingencies (Note 17)
Redeemable noncontrolling interest in subsidiary (Note 14)	203,998
Shareholders' equity:
Common shares, par value $0.001 per share: Authorized common shares 800,000; issued 367,510 and 333,598, respectively	368	334
Capital in excess of par value	2,791,129	2,521,332
Accumulated other comprehensive income (loss)	11,185	(12,119)
Retained earnings	1,423,154	2,033,427
Less: treasury shares, at cost, 52,800 and 49,673 common shares, respectively	(1,314,020)	(1,295,949)
Total shareholders' equity	2,911,816	3,247,025
Noncontrolling interest	26,957	7,770
Total equity	2,938,773	3,254,795
Total liabilities and equity	$ 8,401,984	$ 8,187,015

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.