CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 131,835	$ 65,196
Accounts receivable, net	169,166	232,187
Inventories	108,316	128,441
Income taxes receivable	57,174	51,392
Prepaid expenses	6,718	8,961
Other current assets	5,848	6,031
Current assets	479,057	492,208
Property, plant and equipment, net	497,986	688,335
Goodwill	32,150	32,150
Other assets	26,259	24,401
Total assets	1,035,452	1,237,094
LIABILITIES
Accounts payable	70,536	75,811
Accrued payroll and related expenses	12,130	16,654
Accrued insurance expenses	4,099	4,296
Accrued state, local and other taxes	3,094	2,838
Income taxes payable	4,929	7,639
Other accrued expenses	6,680	226
Current liabilities	101,468	107,464
Long-term accrued insurance expenses	9,537	11,348
Long-term pension liabilities	32,864	33,009
Deferred income taxes	81,466	115,495
Other long-term liabilities	3,318	17,497
Total liabilities	228,653	284,813
Commitments and contingencies (Note 9)
STOCKHOLDERS' EQUITY
Preferred stock, $0.10 par value, 1,000,000 shares authorized, none issued
Common stock, $0.10 par value, 349,000,000 shares authorized, 217,489,402 and 216,991,357 shares issued and outstanding in 2016 and 2015, respectively	21,749	21,699
Capital in excess of par value
Retained earnings	803,152	948,551
Accumulated other comprehensive loss	(18,102)	(17,969)
Total stockholders' equity	806,799	952,281
Total liabilities and stockholders' equity	$ 1,035,452	$ 1,237,094

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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Balance Type:	credit
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- 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.