Condensed Consolidated Statements Of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows from Operating Activities
Net income (loss)	$ 1,026	$ (9,557)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	5,843	4,760
Gain on sale of joint venture interest	(4,055)
Loss on sale of assets	48
Share based compensation	419	609
Equity in (earnings) loss of joint ventures	(294)	2,172
Changes in operating assets and liabilities:
Restricted cash	4,848	(538)
Receivables, net	(7,560)	(6,229)
Inventory	(5,443)	3,885
Prepaid expenses	(129)	(90)
Refundable income taxes	52	(41)
Accounts payable	(998)	6,133
Accounts payable to affiliate, net	(1,556)	2,404
Accrued expenses	1,058	283
Change in derivatives	(270)
Deferred credit	(299)	(597)
Accrued retirement health and life insurance benefits and other noncurrent liabilities	(158)	(613)
Other		1,542
Net cash provided by (used in) operating activities	(7,468)	4,123
Cash Flows from Investing Activities
Proceeds from sale of joint venture interest	9,103
Additions to property and equipment	(4,245)	(9,111)
Proceeds from the disposition of property and equipment	2,232
Investment in and advances to unconsolidated subsidiaries	(500)
Net cash provided by (used in) investing activities	6,590	(9,111)
Cash Flows from Financing Activities
Payment of dividends	(914)
Purchase of treasury stock		(33)
Proceeds from stock plans		48
Exercise of stock options		548
Proceeds from issuance of long-term debt		7,335
Principal payments on long-term debt	(829)	(351)
Proceeds from revolving credit facility	71,095	175,290
Principal payments on revolving credit facility	(68,857)	(170,718)
Net cash provided by financing activities	495	12,119
Increase (decrease) in cash and cash equivalents	(383)	7,131
Cash and cash equivalents, beginning of period	383	472
Cash and cash equivalents, end of period		$ 7,603