Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Current assets:    
Cash and cash equivalents $ 159,885 $ 146,569
Marketable securities 133,467 127,305
Trade and other receivables, net 9,502 10,220
Deferred tax assets, net 27,269 21,243
Prepaid expenses and other current assets 12,159 7,841
Total current assets 342,282 313,178
Property and equipment, net 23,359 24,204
Goodwill 159,342 159,342
Intangible assets, net 36,231 38,315
Deferred tax assets, net – non-current 22,494 22,494
Other non-current assets 5,827 5,783
Total assets 589,535 563,316
Current liabilities:    
Accounts payable 13,556 11,543
Accrued expenses and other liabilities 70,764 67,025
Deferred revenue 167,983 145,206
Total current liabilities 252,303 223,774
Other non-current liabilities 6,712 6,706
Total liabilities 259,015 230,480
Commitments and contingencies      
Stockholders’ equity:    
Common stock, $0.001 par value, 300,000,000 authorized at March 31, 2015 and December 31, 2014; 94,188,225 and 93,944,742 shares issued and 94,143,451 and 93,899,968 outstanding at March 31, 2015 and December 31, 2014, respectively 94 94
Preferred stock, $0.001 par value, 10,000,000 shares authorized and no shares issued and outstanding at March 31, 2015 and December 31, 2014 0 0
Additional paid-in capital 502,712 495,912
Accumulated other comprehensive loss (75) (116)
Accumulated deficit (172,211) (163,054)
Total stockholders’ equity 330,520 332,836
Total liabilities and stockholders’ equity $ 589,535 $ 563,316