Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents		$ 383
Restricted cash	129	7,605
Receivables (less allowance for doubtful accounts: September 30, 2012 - $12; December 31, 2011 - $63)	30,294	27,804
Inventory	34,505	31,082
Prepaid expenses	1,737	958
Derivative assets	606	1,304
Deferred income taxes	4,763	6,056
Refundable income taxes	414	566
Assets held for sale		2,300
Total current assets	72,448	78,058
Property and equipment	189,052	185,386
Less accumulated depreciation and amortization	(112,336)	(108,307)
Property and equipment, net	76,716	77,079
Investment in joint ventures	7,762	12,147
Other assets	1,715	1,873
Total assets	158,641	169,157
Current Liabilities
Current maturities of long-term debt	1,710	1,670
Revolving credit facility	26,368	21,142
Accounts payable	15,094	22,704
Accounts payable to affiliate, net	2,572	6,167
Accrued expenses	5,418	4,023
Derivative liabilities	148	3,465
Total current liabilities	51,310	59,171
Long-term debt, less current maturities	5,564	6,852
Deferred credit	3,747	4,195
Accrued retirement health and life insurance benefits	5,283	6,309
Other non current liabilities	1,460	2,144
Deferred income taxes	4,763	6,056
Total liabilities	72,127	84,727
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 and 19,530,344 shares at September 30, 2012 and December 31, 2011, respectively; 17,934,233 and 18,115,965 shares outstanding at September 30, 2012 and December 31, 2011, respectively	6,715	6,715
Additional paid-in capital	7,553	6,925
Retained earnings	72,351	78,953
Accumulated other comprehensive income (loss)	(25)	(1,035)
Treasury stock, at cost
Common; 181,732 and 1,414,379 shares at September 30, 2012 and December 31, 2011, respectively	(84)	(7,132)
Total stockholders’ equity	86,514	84,430
Total liabilities and stockholders’ equity	$ 158,641	$ 169,157