CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 538,504	$ 104,041
Short-term investments	382,681	872,188
Accounts receivable, net	106,451	93,467
Inventory	55,079	41,947
Deferred tax assets, net	38,383	14,190
Prepaid expenses and other current assets	82,016	31,217
Total current assets	1,203,114	1,157,050
Property and equipment, net	170,122	166,465
In-process research and development	931,700	272,700
Goodwill	273,572	114,130
Other intangible assets, net	137,411	152,830
Long-term investments	76,640	3,167
Other assets	73,673	66,043
Total assets	2,866,232	1,932,385
Current liabilities:
Accounts payable	36,061	45,603
Accrued liabilities	160,644	163,633
Short-term deferred revenue	7,417	6,784
Short-term contingent consideration		38,998
Other current liabilities	3,500	3,500
Total current liabilities	207,622	258,518
Long-term deferred revenue	31,952	34,091
Long-term deferred tax liabilities, net	252,398	103,081
Long-term contingent consideration	161,372	150,215
Long-term debt, net	809,539	367,811
Other long-term liabilities	27,766	27,921
Total liabilities	1,490,649	941,637
Commitments and contingencies (Notes E, J, L and N)
Stockholders' equity:
Preferred stock, non-cumulative; convertible, $.001 par value; authorized 5,000,000 shares; no shares issued and outstanding
Common stock, $.001 par value; authorized 150,000,000 shares; 74,011,707 and 64,713,695 shares issued and outstanding as of September 30, 2013 and December 31, 2012, respectively	74	65
Additional paid-in capital	1,338,259	940,969
Accumulated other comprehensive income (loss)	42	(59)
Retained earnings	37,208	49,773
Total stockholders' equity	1,375,583	990,748
Total liabilities and stockholders' equity	$ 2,866,232	$ 1,932,385