CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (4,217)	$ 39
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	7,162	8,388
Share-based compensation	2,392	2,575
Deferred tax assets	44	21
Other non-cash transactions	(118)	1,204
Changes in operating assets and liabilities:
Accounts receivable, net	(769)	607
Inventories	1,306	305
Prepaid expenses and other assets	1,944	3,041
Accounts payable and accrued liabilities	(9,170)	(6,954)
Deferred revenue	(449)	(756)
Other long-term liabilities	575	(321)
Net cash (used in) provided by operating activities	(1,300)	8,149
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of available-for-sale securities	0	(23,208)
Proceeds from sales of available-for-sale securities	95	5,393
Proceeds from maturities of available-for-sale securities	388	4,910
Capital expenditures	(1,388)	(1,158)
Purchase of technology rights	(1,000)	0
Net cash used in investing activities	(1,905)	(14,063)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock, net	(154)	(208)
Repurchase of convertible notes	(91,614)	0
Net cash used in financing activities	(91,768)	(208)
Effect of exchange rate changes on cash and cash equivalents	74	267
Net decrease in cash and cash equivalents	(94,899)	(5,855)
Cash and cash equivalents at beginning of period	201,937	35,484
Cash and cash equivalents at end of period	$ 107,038	$ 29,629

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).