Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 114,094	$ 44,791
Short-term investments	55,694	20,070
Accounts receivable, net	4,737	909
Inventories, net	10,924	3,140
Prepaid expenses and other current assets	4,186	2,415
Total current assets	189,635	71,325
Property and equipment, net	833	809
Deferred financing costs, net	4,068
Restricted cash	2,580	1,284
Total assets	197,116	73,418
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	7,046	1,601
Deferred revenues	414	428
Accrued interest on Convertible Notes	4,643
Other current liabilities	17,962	16,023
Total current liabilities	30,065	18,052
Convertible Notes, net of discount of $54,542	175,458
Other liabilities	3	6,099
Commitments and contingencies
Stockholders' Equity:
Preferred stock-$.01 par value 4,000,000 shares authorized; no shares issued
Common stock-$.01 par value 150,000,000 shares authorized; issued and outstanding 71,502,000 shares in 2011 and 70,259,000 shares in 2010	715	703
Additional paid-in-capital	408,463	364,139
Accumulated deficit	(417,603)	(315,576)
Accumulated other comprehensive income	15	1
Total stockholders' equity	(8,410)	49,267
Total liabilities and stockholders' equity	$ 197,116	$ 73,418