Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 258,035	$ 126,364
Available for sale securities	49,739	120,280
Accrued interest receivable	443	1,279
Accounts receivable, net of allowances of approximately $15.8 million and $15.5 million at September 30, 2011 and December 31, 2010, respectively	72,725	46,551
Inventory	30,426	25,343
Prepaid expenses and other current assets	7,452	4,804
Total current assets	418,820	324,621
Fixed assets, net	18,528	20,662
Intangible assets, net	86,147	82,925
Goodwill	14,671	14,671
Restricted cash	4,626	5,778
Deferred tax assets, net	93,582	25,197
Other assets	289	270
Total assets	636,663	474,124
Current liabilities:
Accounts payable	10,432	8,594
Accrued expenses	113,655	76,242
Deferred revenue	1,183	534
Total current liabilities	125,270	85,370
Contingent purchase price	28,204	25,387
Other liabilities	5,896	5,769
Total liabilities	159,370	116,526
Stockholders' equity:
Preferred stock, $1.00 par value per share, 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value per share, 125,000,000 shares authorized; 54,093,961 and 53,464,145 issued and outstanding at September 30, 2011 and December 31, 2010, respectively	54	53
Additional paid-in capital	609,013	596,667
Accumulated deficit	(131,247)	(239,542)
Accumulated other comprehensive income	(527)	420
Total stockholders' equity	477,293	357,598
Total liabilities and stockholders' equity	$ 636,663	$ 474,124