CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 37,496	$ 25,671
Restricted cash	690	699
Available-for-sale securities-short-term portion	0	9,366
Accounts receivable, net	52,111	53,893
Inventories, net-short term portion	74,196	72,691
Deferred tax assets-short-term portion	317	359
Prepaid expenses and other current assets	10,076	10,126
Total current assets	174,886	172,805
Property and equipment, net	25,868	28,663
Inventory, Net-Long-Term Portion	8,876	11,772
Goodwill	158,338	159,736
Intangible assets, net	145,785	152,718
Deferred tax assets-long-term portion	1,916	3,394
Other long-term assets	13,707	15,206
Total assets	529,376	544,294
Current liabilities:
Accounts payable and accrued liabilities	49,019	50,355
Convertible notes-short-term portion	0	3,855
Term loan-short-term portion	12,750	12,713
Deferred revenue-short-term portion	18,911	8,498
Total current liabilities	80,680	75,421
Deferred revenue-long-term portion	4,041	3,450
Other long-term liabilities	21,010	22,689
Convertible notes	105,000	105,000
Term loan-long-term portion	57,338	60,563
Stockholders' equity:
Common stock	711	710
Additional paid-in capital	761,435	759,549
Accumulated other comprehensive income	3,988	6,302
Accumulated deficit	(504,827)	(489,390)
Total stockholders' equity	261,307	277,171
Total liabilities and stockholders' equity	$ 529,376	$ 544,294