Condensed Consolidated Balance Sheets (unaudited) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 34,806 $ 50,239
Marketable securities 131,298 196,474
Trade and other receivables, net 17,080 13,974
Prepaid expenses and other current assets 9,168 12,303
Total current assets 192,352 272,990
Property and equipment, net 44,665 30,485
Goodwill 172,087 172,087
Intangible assets, net 21,830 30,174
Deferred tax assets, net 81,164 77,363
Other non-current assets 13,627 9,710
Total assets 525,725 592,809
Current liabilities:    
Accounts payable 8,645 24,747
Accrued expenses and other liabilities 57,362 76,226
Deferred revenue 189,034 166,403
Total current liabilities 255,041 267,376
Other non-current liabilities 20,113 7,367
Total liabilities 275,154 274,743
Commitments and contingencies
Stockholders’ equity:    
Common stock, $0.001 par value, 300,000,000 authorized at September 30, 2016 and December 31, 2015; 100,850,257 and 95,877,947 shares issued and 93,647,679 and 95,832,238 outstanding at September 30, 2016 and December 31, 2015, respectively 101 96
Preferred stock, $0.001 par value, 10,000,000 shares authorized and no shares issued and outstanding at September 30, 2016 and December 31, 2015 0 0
Treasury stock, at cost; 7,202,578 shares and no shares held at September 30, 2016 and December 31, 2015, respectively (74,974) 0
Additional paid-in capital 544,009 532,388
Accumulated other comprehensive loss (118) (361)
Accumulated deficit (218,447) (214,057)
Total stockholders’ equity 250,571 318,066
Total liabilities and stockholders’ equity $ 525,725 $ 592,809