Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities
Net loss	$ (10,065)	$ (23,508)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	399	751
Depreciation and amortization	14,176	14,120
Changes in operating assets and liabilities:
Accounts receivable	(3,341)	(1,334)
Inventories	1,701	8,895
Prepaid expenses	83	458
Accounts payable	(4,394)	5,477
Other current liabilities	3,450	(309)
Other assets and liabilities	1,031	(3,512)
Net cash provided by operating activities	3,040	1,038
Cash flows from investing activities
Purchases of property, plant and equipment	(1,074)	(597)
Net cash used in investing activities	(1,074)	(597)
Cash flows from financing activities
Repayment of debt	0	(6,300)
Repayment of notes payable and capital leases	(57)	(67)
Net cash used in financing activities	(57)	(6,367)
Net increase (decrease) in cash and cash equivalents	1,909	(5,926)
Cash and cash equivalents, beginning of period	9,323	15,139
Cash and cash equivalents, end of period	11,232	9,213
Cash paid for income taxes	7	6
Cash paid for interest	207	3,088
Non-cash investing and financing activities:
Additions to property, plant and equipment unpaid during period	$ 255	$ 4