Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Activities
Net loss	$ (11,588)	$ (10,066)	$ (16,869)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	18,170	20,788	24,485
Debt discount amortization	10,538	8,149	6,833
Loss on extinguishment of debt	621	0	0
Impairment of long-lived assets	0	0	23,251
Deferred income taxes	165	200	997
Derivatives	0	0	(827)
Stock-based compensation	3,146	3,628	3,528
Equity method losses	0	1,224	252
Loss on disposal of property, plant and equipment	711	436	29
Changes in operating assets and liabilities:
Accounts receivable	23,931	(21,915)	(17,413)
Inventories	125	1,083	24,332
Prepaid expenses and other assets	(19)	2,474	2,950
Accounts payable	(3,215)	(1,407)	1,087
Accrued expenses and other liabilities	(8,385)	6,604	(12,367)
Income taxes receivable (payable)	(353)	7,796	(5,205)
Net cash provided by operating activities	33,847	18,994	35,063
Investing Activities
Expenditures for property, plant and equipment	(7,419)	(9,966)	(6,919)
Proceeds from sales of property, plant and equipment	28	85	45
Purchase of acquired company, net of cash acquired	(2,075)	0	0
Notes receivable, net	99	108	236
Net cash used in investing activities	(9,367)	(9,773)	(6,638)
Financing Activities
Financing costs	(135)	0	(798)
Principal payments under mortgages and notes	(2,542)	(545)	(31,147)
Borrowings under line of credit	0	44,000	0
Principal payments under line of credit	0	(44,000)	0
Restricted cash	(37,000)	0	0
Repurchases of convertible notes	(5,882)	0	0
Repurchases of common stock	(3,092)	(1,089)	(572)
Proceeds from employee stock purchase and option plans	1,427	169	417
Net cash used in financing activities	(47,224)	(1,465)	(32,100)
Net increase (decrease) in cash and cash equivalents	(22,744)	7,756	(3,675)
Cash and cash equivalents at beginning of year	27,270	19,514	23,189
Cash and cash equivalents at end of year	4,526	27,270	19,514
Supplemental disclosures of cash flow information:
Cash paid for interest, net of capitalized interest	6,349	6,526	7,002
Cash paid (received) for income taxes, net	$ 658	$ (7,553)	$ (2,301)