Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash	$ 2,228	$ 5,610
Restricted cash	2,270	2,270
Short-term investments	0	250
Receivables, net	134,875	139,052
Taxes receivable	679	14,851
Inventories	243,419	255,573
Other Assets, Current	9,376	9,331
Total current assets	392,847	426,937
Property, plant and equipment, net	873,112	866,538
Goodwill	209,087	209,087
Intangible assets, net	18,753	19,990
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	1,086	596
Other assets, net	4,329	4,221
TOTAL ASSETS	1,499,214	1,527,369
Line of Credit, Current	6,005	0
Current liabilities:
Accounts payable and accrued liabilities	192,820	220,368
Current liability for pensions and other postretirement employee benefits	7,559	7,559
Total current liabilities	206,384	227,927
Long-term debt	569,179	568,987
Liability for pensions and other postretirement employee benefits	87,609	89,057
Other long-term obligations	43,779	46,738
Accrued taxes	1,525	1,676
Deferred Tax Liabilities, Gross, Noncurrent	123,032	118,118
Stockholders' equity:
Preferred stock, par value $0.0001 per share, 5,000,000 authorized shares, no shares issued	0	0
Common stock, par value $0.0001 per share, 100,000,000 authorized shares, 24,153,987 and 24,056,057 shares issued	2	2
Additional paid-in capital	341,493	340,095
Retained earnings	538,753	520,307
Treasury stock, at cost, common shares-5,097,883 and 4,498,388 shares repurchased	(357,649)	(329,990)
Accumulated other comprehensive loss, net of tax	(54,893)	(55,548)
Total stockholders' equity	467,706	474,866
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,499,214	$ 1,527,369

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due beyond one year or the operating cycle, whichever is longer. Alternate captions include income taxes payable, noncurrent.