Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 113,200	$ 32,497
Marketable securities	137,383	49,533
Accounts receivable	1,156	670
Unbilled revenues	5,164	3,467
Inventories	3,194
Prepaid expenses and other current assets	4,396	1,816
Total current assets	264,493	87,983
Property, plant and equipment - net	22,319	5,693
Other assets	301	308
Total assets	287,113	93,984
LIABILITIES, REDEEMABLE CONVERTIBLE PREFERRED STOCK, AND STOCKHOLDERS' EQUITY (DEFICIT)
Accounts payable	5,038	6,137
Accrued liabilities	7,549	4,320
Current portion of long-term debt	4,673	50
Deferred revenue	914	1,363
Preferred stock warrant liability		2,961
Other current liabilities	81
Total current liabilities	18,255	14,831
Other liabilities	560	728
Long-term debt	15,837	179
Total liabilities	34,652	15,738
Commitments and contingencies (Note 12)
Redeemable convertible preferred stock:
Redeemable convertible preferred stock		128,313
Stockholders' equity (deficit):
Preferred stock, par value $0.001 - 5,000,000 and -0- shares authorized at September 30, 2011 and December 31, 2010, respectively; -0- shares issued and outstanding at September 30, 2011 and December 31, 2010
Common stock, par value $0.001 - 150,000,000 and 60,000,000 shares authorized at September 30, 2011 and December 31, 2010, respectively; 59,597,894 and 12,067,090 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively	60	12
Additional paid-in capital	344,382	4,393
Notes receivable from stockholders		(1,597)
Accumulated other comprehensive loss	(766)	(40)
Accumulated deficit	(91,215)	(52,835)
Total stockholders' equity (deficit)	252,461	(50,067)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	287,113	93,984
Series A Preferred Stock [Member]
Redeemable convertible preferred stock:
Redeemable convertible preferred stock		2,991
Series B Preferred Stock [Member]
Redeemable convertible preferred stock:
Redeemable convertible preferred stock		8,645
Series C Preferred Stock [Member]
Redeemable convertible preferred stock:
Redeemable convertible preferred stock		56,943
Series D Preferred Stock [Member]
Redeemable convertible preferred stock:
Redeemable convertible preferred stock		$ 59,734