CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Consolidated net income (loss)	$ 29,001	$ (639)	$ (71,269)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Loss from operations of discontinued operations			132
Depreciation and amortization	15,267	15,653	17,330
Provision for inventory	6,646	6,361	2,485
Impairment of goodwill and intangible assets			1,045
Share-based compensation	3,276	1,871	2,052
Deferred income taxes	78	5,553	1,356
Earnings from equity investment	(1,171)	(857)	(515)
Gain on sale of auction rate securities		(988)	(2,414)
Non-cash reorganization items			26,223
Non-cash interest expense	1,881	976	4,661
Non-cash restructuring charges	1,163	72	81
Other non-cash items	199	(456)	763
Changes in operating assets and liabilities:
Accounts receivable	4,822	(7,727)	880
Inventories	(6,062)	(8,171)	8,355
Deferred cost of goods sold	5,791	22,281	12,461
Prepaid expenses and other current assets	(50)	(103)	671
Deferred revenue	(9,343)	(40,347)	(26,315)
Accounts payable, accrued expenses and income taxes receivable and payable	(3,961)	3,955	(1,809)
Other non-current assets and liabilities	(2,364)	(2,172)	(1,827)
Cash used in operating activities of discontinued operations			(132)
Cash provided by (used in) operating activities	45,173	(4,738)	(25,786)
Cash flows from investing activities:
Purchases of property, plant and equipment	(4,217)	(2,659)	(1,321)
Proceeds from the sale of auction rate securities		11,408	16,975
Proceeds from the sale of property, plant and equipment			4,054
Cash (used in) provided by investing activities	(4,217)	8,749	19,708
Cash flows from financing activities:
Proceeds from term loan and revolving credit facilities	73,107
Payments for debt issuance costs	(2,988)	(1,565)
Proceeds from Rights Offering		64,889
Repayments of long-term debt and revolving credit facility	(113,214)	(74,889)
Cash used in financing activities	(43,095)	(11,565)
Effect of exchange rates on cash and cash equivalents	193	1,007	405
Decrease in cash and cash equivalents	(1,946)	(6,547)	(5,673)
Cash and cash equivalents, beginning of year	56,781	63,328	69,001
Cash and cash equivalents, end of year	54,835	56,781	63,328
Supplemental disclosure of cash flow information:
Cash paid for interest	12,464	25,899	22,779
Cash paid for income taxes	1,912	2,145	954
Income tax refunds received	25	2,053	10,456
Cash paid for reorganization items		26,686	679
Supplemental disclosure of non cash financing activity:
Exchange of debt for common shares		28,071
Issuance of PIK notes	532	535
Assets acquired under capital lease obligations	2,214
Supplemental disclosure of non cash investing activity:
Auction rate securities			773
Accrual for capital expenditures	$ 362