Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities
Net loss	$ (10,361)	$ (25,223)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	1,493	1,435
Depreciation and amortization	29,712	28,720
Loss on disposal of assets	0	1,702
Changes in operating assets and liabilities:
Accounts receivable	14,211	(4,057)
Inventories	(2,499)	(2,804)
Prepaid expenses	(587)	968
Accounts payable	(7,046)	8,685
Other current liabilities	(385)	420
Other assets and liabilities	(971)	3,021
Net cash provided by operating activities	23,567	12,867
Cash flows from investing activities
Purchases of property, plant and equipment	(2,843)	(4,576)
Net cash used in investing activities	(2,843)	(4,576)
Cash flows from financing activities
Proceeds from sale of stock	46,000	0
Proceeds from issuance of debt	0	27,514
Repayment of debt	(54,078)	(30,600)
Repayment of notes payable and capital leases	(3,201)	(1,074)
Payment of equity offering costs	(1,621)	(1,857)
Payment of debt issuance costs	(113)	(955)
Net cash used in financing activities	(13,013)	(6,972)
Net increase in cash and equivalents	7,711	1,319
Cash and cash equivalents, beginning of period	7,428	6,109
Cash and cash equivalents, end of period	15,139	7,428
Cash paid for income taxes	5	5
Cash paid for interest	6,870	7,643
Non-cash investing and financing activities:
Additions to property, plant and equipment unpaid during period	22	83
Additions to equity offering and debt issuance costs unpaid during period	0	1,078
Issuance of common stock in exchange for debt	$ 11,601	$ 0