Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 0	$ 2,857
Receivables (less allowance for doubtful accounts: September 30, 2014 - $7; December 31, 2013 - $18)	31,550	27,821
Inventory	31,465	34,917
Prepaid expenses	1,435	848
Deferred income taxes	2,532	4,977
Refundable income taxes	225	466
Total current assets	67,207	71,886
Property and equipment	198,549	194,687
Less accumulated depreciation and amortization	(133,337)	(124,443)
Property and equipment, net	65,212	70,244
Equity method investments	14,364	7,123
Other assets	2,326	2,076
Total assets	149,109	151,329
Current Liabilities
Current maturities of long-term debt	2,598	1,557
Accounts payable	14,101	23,107
Accounts payable to affiliate, net	3,424	1,204
Accrued expenses	7,987	8,282
Total current liabilities	28,110	34,150
Long-term debt, less current maturities	8,329	3,611
Revolving credit facility	5,736	18,000
Deferred credit	4,259	3,925
Accrued retirement health and life insurance benefits	3,654	4,423
Other noncurrent liabilities	706	640
Deferred income taxes	1,318	4,977
Total liabilities	52,112	69,726
Commitments and Contingencies (Note 4)
Capital stock
Preferred, 5% non-cumulative; $10 par value; authorized 1,000 shares; issued and outstanding 437 shares	4	4
Common stock
No par value; authorized 40,000,000 shares; issued 18,115,965 shares at September 30, 2014 and December 31, 2013, 17,635,730 and 17,750,421 shares outstanding at September 30, 2014 and December 31, 2013, respectively	6,715	6,715
Additional paid-in capital	9,196	8,728
Retained earnings	81,891	66,686
Accumulated other comprehensive gain (loss), net of tax	198	(4)
Treasury stock, at cost
Shares of 480,235 and 365,544 at September 30, 2014 and December 31, 2013, respectively	(1,007)	(526)
Total stockholders’ equity	96,997	81,603
Total liabilities and stockholders’ equity	$ 149,109	$ 151,329