CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 305,038	$ 230,888
Marketable securities	9,627	11,407
Accounts receivable, net	23,975	15,686
Inventory, net (Note 5)	2,061	1,096
Other current assets	10,538	16,120
Total current assets	351,239	275,197
Restricted cash	10,874	11,308
Property and equipment, net (Note 6)	308,966	254,082
Intangible and other assets, net (Note 7)	5,512	6,105
Total assets	676,591	546,692
Current liabilities:
Accounts payable	9,260	17,013
Current portion of long-term debt	30,014	13,872
Accrued compensation and benefits	11,845	25,331
Accrued product development expenses	18,953	22,132
Other accrued expenses	21,533	22,849
Current portion of deferred revenue	10,890	6,763
Other current liabilities (Note 8)	8,348	24,324
Total current liabilities	110,843	132,284
Long-term debt (Note 9)	522,905	429,220
Other long-term liabilities	0	11,244
Deferred revenue	89,192	77,085
Total liabilities	722,940	649,833
Commitments (Note 10)
Stockholders’ equity (deficit):
Preferred stock, $.01 par value, authorized 10,000,000 shares, none issued and outstanding	0	0
Common stock, $.001 par value, authorized 450,000,000 shares; issued and outstanding 194,091,892 shares in 2016 and 189,662,148 shares in 2015	194	190
Additional paid-in capital	1,365,933	1,338,585
Accumulated other comprehensive (loss) income	5,041	3,835
Accumulated deficit	(1,417,517)	(1,445,751)
Total stockholders’ equity (deficit)	(46,349)	(103,141)
Total liabilities and stockholders’ equity (deficit)	$ 676,591	$ 546,692