Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 718,563	$ 569,299
Marketable securities, available for sale	759,174	895,777
Accounts receivable, net	114,308	85,517
Inventories	16,753	14,147
Prepaid expenses and other current assets	41,298	23,836
Total current assets	1,650,096	1,588,576
Restricted cash	121	130
Property and equipment, net	720,878	696,911
Goodwill	30,992	30,992
Other assets	3,999	2,432
Total assets	2,406,086	2,319,041
Current liabilities:
Accounts payable	38,472	49,327
Accrued expenses	244,279	271,077
Deferred revenues, current portion	21,210	21,510
Accrued restructuring expenses, current portion	38,384	14,286
Capital lease obligations, current portion	18,124	16,893
Other liabilities, current portion	11,709	24,736
Total current liabilities	372,178	397,829
Deferred revenues, excluding current portion	34,723	49,459
Accrued restructuring expenses, excluding current portion	17,218	14,067
Capital lease obligations, excluding current portion	42,200	48,754
Construction financing lease obligation, excluding current portion	473,172	440,937
Senior secured term loan	294,740	0
Other liabilities, excluding current portion	15,950	11,590
Total liabilities	1,250,181	962,636
Commitments and contingencies
Shareholders’ equity:
Preferred stock, $0.01 par value; 1,000,000 shares authorized; none issued and outstanding at September 30, 2014 and December 31, 2013	0	0
Common stock, $0.01 par value; 300,000,000 shares authorized at September 30, 2014 and December 31, 2013; 240,238,090 and 233,788,852 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	2,375	2,320
Additional paid-in capital	5,681,163	5,321,286
Accumulated other comprehensive gain (loss)	1,161	(306)
Accumulated deficit	(4,528,794)	(3,966,895)
Total shareholders’ equity	1,155,905	1,356,405
Total liabilities and shareholders’ equity	$ 2,406,086	$ 2,319,041