CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 20,206	$ 55,432
Accounts and other receivables – net	149,099	196,003
Inventories – net	115,026	129,208
Other current assets	3,900	7,130
Total current assets	288,231	387,773
Property, plant and equipment – net	639,728	612,612
Goodwill	15,005	15,005
Other assets	37,312	34,884
Total assets	980,276	1,050,274
Current liabilities:
Accounts payable	209,239	227,712
Accrued liabilities	26,310	35,013
Deferred income and customer advances	2,295	17,194
Line of credit – short-term	9,400	0
Current portion of long-term debt	0	16,875
Total current liabilities	247,244	296,794
Deferred income taxes	101,092	92,276
Line of credit – long-term	190,600	0
Long-term debt	0	248,339
Postretirement benefit obligations	28,145	33,396
Other liabilities	4,350	3,144
Total liabilities	571,431	673,949
COMMITMENTS AND CONTINGENCIES (Note 9)
STOCKHOLDERS' EQUITY
Common stock, par value $0.01; 200,000,000 shares authorized; 30,555,715 shares issued and 29,991,468 outstanding at September 30, 2018; 30,482,966 shares issued and outstanding at December 31, 2017	306	305
Preferred stock, par value $0.01; 50,000,000 shares authorized and 0 shares issued and outstanding at September 30, 2018 and December 31, 2017	0	0
Treasury stock at par (564,247 shares at September 30, 2018; 0 shares at December 31, 2017)	(6)	0
Additional paid-in capital	250,149	263,081
Retained earnings	167,058	121,985
Accumulated other comprehensive loss	(8,662)	(9,046)
Total stockholders' equity	408,845	376,325
Total liabilities and stockholders' equity	$ 980,276	$ 1,050,274

The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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- Definition

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).