CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 50,151	$ 25,671
Restricted cash	412	699
Available-for-sale securities	0	9,366
Accounts receivable, net	48,547	53,893
Inventories—short-term portion	62,665	72,691
Deferred tax assets—short-term portion	265	359
Assets held for sale	2,486	0
Prepaid expenses and other current assets	10,124	10,126
Total current assets	174,650	172,805
Property and equipment, net	20,265	28,663
Inventories—long-term portion	6,357	11,772
Goodwill	160,778	159,736
Intangible assets, net	136,013	152,718
Deferred tax assets—long-term portion	385	3,394
Other long-term assets	12,193	15,206
Total assets	510,641	544,294
Current liabilities:
Accounts payable and accrued liabilities	40,300	50,355
Convertible notes—short-term portion	0	3,855
Term loan—short-term portion	12,750	12,713
Deferred revenue—short-term portion	19,540	8,498
Total current liabilities	72,590	75,421
Deferred revenue—long-term portion	3,021	3,450
Convertible notes	105,000	105,000
Term loan—long-term portion	50,963	60,563
Other long-term liabilities	21,515	22,689
Stockholders’ equity:
Common stock	719	710
Additional paid-in capital	764,967	759,549
Accumulated other comprehensive income	6,956	6,302
Accumulated deficit	(515,090)	(489,390)
Total stockholders’ equity	257,552	277,171
Total liabilities and stockholders’ equity	$ 510,641	$ 544,294