Consolidated Statement of Operations (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Revenues        
License $ 69,763 $ 41,951 $ 178,562 $ 101,895
Maintenance and services 34,706 19,128 91,131 49,086
Total revenues 104,469 61,079 269,693 150,981
Cost of revenues        
License 273 237 568 523
Maintenance and services 9,268 4,341 24,806 11,951
Total cost of revenues 9,541 [1] 4,578 [1] 25,374 [1] 12,474 [1]
Gross profit 94,928 56,501 244,319 138,507
Operating expenses        
Sales and marketing 58,565 [1] 32,189 [1] 147,936 [1] 83,426 [1]
Research and development 29,022 [1] 15,438 [1] 77,186 [1] 42,514 [1]
General and administrative 11,111 [1] 6,345 [1] 28,953 [1] 18,064 [1]
Total operating expenses 98,698 53,972 254,075 144,004
Operating income (loss) (3,770) 2,529 (9,756) (5,497)
Other income (expense), net 353 (177) (163) (350)
Income (loss) before income tax expense (benefit) (3,417) 2,352 (9,919) (5,847)
Income tax expense (benefit) 1,214 (89) 4,915 (1,678)
Net income (loss) $ (4,631) $ 2,441 $ (14,834) $ (4,169)
Net income (loss) per share attributable to common stockholders:        
Basic (in usd per share) $ (0.07) $ 0.04 $ (0.22) $ (0.09)
Diluted (in usd per share) $ (0.07) $ 0.03 $ (0.22) $ (0.09)
Weighted average shares used to compute net income (loss) per share attributable to common stockholders:        
Basic (in shares) 68,966 59,143 66,923 47,093
Diluted (in shares) 68,966 71,348 66,923 47,093
[1] Includes stock-based compensation expense as follows:Cost of revenues for the three months ended September 30, 2014 and 2013 were $614 and $113 and for the nine months ended September 30, 2014 and 2013 were $1,457 and $291. Sales and marketing expenses for the three months ended September 30, 2014 and 2013 were $4,810 and $1,442 and for the nine months ended September 30, 2014 and 2013 were $12,271 and $3,506. Research and development expenses for the three months ended September 30, 2014 and 2013 were $5,550 and $1,473 and for the nine months ended September 30, 2014 and 2013 were $13,771 and $3,785. General and administrative expenses for the three months ended September 30, 2014 and 2013 were $1,539 and $702 and for the nine months ended September 30, 2014 and 2013 were $4,025 and $1,951.