CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 145,915	$ 288,863
Short-term investments	23,620	22,918
Accounts receivable, net	30,085	55,222
Inventories	12,010	13,466
Prepaid expenses and other current assets	58,387	31,828
Total current assets	270,017	412,297
Long-term investments	24,832	29,005
Property and equipment, net	272,728	281,779
Intangible assets, net	56,534	62,323
Goodwill	408,975	408,975
Other assets	10,046	10,948
Total assets	1,043,132	1,205,327
Current liabilities:
Accounts payable	14,436	35,329
Accrued liabilities	67,222	149,134
Deferred revenue, current portion	25,969	27,329
Total current liabilities	107,627	211,792
Convertible senior notes, net	267,893	264,361
Other liabilities	121,524	123,112
Total liabilities	$ 497,044	$ 599,265
Commitments and contingencies (Note 10)
Stockholders' equity:
Common stock, $0.0001 par value; 100,000 shares authorized; 34,428 and 34,777 shares issued and outstanding on March 31, 2016 and December 31, 2015, respectively	$ 3	$ 4
Additional paid-in capital	917,033	900,218
Accumulated other comprehensive income (loss)	41	(68)
Accumulated deficit	(370,989)	(294,092)
Total stockholders' equity	546,088	606,062
Total liabilities and stockholders' equity	$ 1,043,132	$ 1,205,327