Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Current assets    
Cash and cash equivalents $ 226,337 $ 39,302
Accounts receivable, net 44,173 30,752
Prepaid expenses and other current assets 5,206 2,789
Income taxes receivable 4,521 1,072
Deferred income taxes 2,250 2,246
Total current assets 282,487 76,161
Property and equipment, net 18,184 10,346
Deferred income taxes 190 66
Deposits and other noncurrent assets 836 419
Total assets 301,697 86,992
Current liabilities    
Accounts payable 4,253 2,176
Accrued and other current liabilities 6,970 4,471
Accrued compensation and employee related benefits 17,228 13,170
Income taxes payable 348 129
Deferred revenue in current liabilities 50,968 31,984
Total current liabilities 79,767 51,930
Deferred income taxes 1,353 1,353
Deferred revenue 3,162 2,423
Other long-term liabilities 2,648 1,312
Total liabilities 86,930 57,018
Commitments and contingencies (Note 6)      
Convertible preferred stock    
Convertible Preferred Stock 0 0
Stockholders’ equity (deficit)    
Additional paid-in capital 220,730 11,698
Accumulated other comprehensive loss (42) (1)
Accumulated deficit (5,927) (1,758)
Total stockholders’ equity 214,767 9,943
Total liabilities, convertible preferred stock and stockholders’ equity 301,697 86,992
Series B Preferred Stock [Member]
    
Convertible preferred stock    
Convertible Preferred Stock 0 15,007
Series A Preferred Stock [Member]
    
Convertible preferred stock    
Convertible Preferred Stock 0 5,024
Common Class B [Member]
    
Stockholders’ equity (deficit)    
Common Stock 5 4
Common Class A [Member]
    
Stockholders’ equity (deficit)    
Common Stock 1 0
Convertible Preferred Stock [Member]
    
Convertible preferred stock    
Convertible Preferred Stock $ 0 $ 20,031