Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 3,606	$ 10,374
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Change in fair value of warrant liability	3,875	(7,554)
Depreciation and amortization	2,648	2,468
Amortization of deferred financing costs	290	1,034
Accretion of debt discount	1,014	1,295
Gain on sale of assets	(1,043)	(705)
Stock compensation expense	2,178	423
Deferred income tax provision	530	159
Excess tax benefit related to share-based awards	(295)	(57)
Non-cash loss on extinguishment of debt	3,590
Change in current assets and liabilities:
Accounts receivable	(3,169)	(3,714)
Inventories	(2,334)	(2,805)
Accrued liabilities	(1,494)	(2,622)
Interest payable	(1,634)	(1,457)
Accounts payable	1,200	(830)
Other current assets	(98)	65
Income taxes	(3,149)	1,115
Net cash provided by (used) in operating activities	5,715	(2,811)
Cash flows from investing activities:
Capital expenditures	(4,119)	(1,241)
Proceeds from sale of assets	1,230	1,043
Purchase of patents and other intangible assets	(15)
Net cash used in investing activities	(2,904)	(198)
Cash flows from financing activities:
Repayments of indebtedness	(36,276)	(886)
Excess tax benefit related to share-based awards	295	57
Purchase of treasury stock	(216)	(48)
Proceeds from exercise of stock options	33	7
Proceeds from exercise of warrants		4,020
Debt issuance costs		(1,000)
Net cash provided by (used in) financing activities	(36,164)	2,150
Effect of exchange rate changes on cash and cash equivalents held or due in a foreign currency	13	(1)
Net decrease in cash and cash equivalents	(33,340)	(860)
Cash and cash equivalents at the beginning of period	46,682	19,863
Cash and cash equivalents at the end of period	$ 13,342	$ 19,003