v2.4.0.8

Quarterly Financial Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Revenues [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 29,039 | $ 27,749 | $ 26,291 | $ 24,883 | $ 24,657 | $ 23,382 | $ 22,190 | $ 21,191 | $ 107,962 | $ 91,420 | $ 76,212
Cost of revenues | 6,526 | 6,415 | 5,924 | 5,795 | 4,981 | 4,634 | 4,629 | 4,160 | 24,660 | 18,404 | 13,247
Gross profit | 22,513 | 21,334 | 20,367 | 19,088 | 19,676 | 18,748 | 17,561 | 17,031 | 83,302 | 73,016 | 62,965
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Research and development | 5,939 | 5,151 | 5,291 | 5,297 | 4,870 | 5,076 | 5,148 | 5,101 | 21,678 | 20,195 | 19,633
Sales and marketing | 11,784 | 10,411 | 10,160 | 10,168 | 9,911 | 8,797 | 9,784 | 9,246 | 42,523 | 37,738 | 31,526
General and administrative | 4,566 | 4,277 | 4,053 | 3,896 | 3,268 | 3,154 | 2,843 | 2,814 | 16,792 | 12,079 | 8,900
Total operating expenses | 22,289 | 19,839 | 19,504 | 19,361 | 18,049 | 17,027 | 17,775 | 17,161 | 80,993 | 70,012 | 60,059
Income from operations | 224 | 1,495 | 863 | (273) | 1,627 | 1,721 | (214) | (130) | 2,309 | 3,004 | 2,906
Other income (expense), net | (51) | 24 | 102 | (260) | (171) | 23 | (141) | (77) | (185) | (366) | (536)
Income before provision for income taxes | 173 | 1,519 | 965 | (533) | 1,456 | 1,744 | (355) | (207) | 2,124 | 2,638 | 2,370
Provision for (benefit from) income taxes | 128 | 210 | 92 | 70 | 281 | 77 | (78) | 78 | 500 | 358 | 416
Net income | 45 | 1,309 | 873 | (603) | 1,175 | 1,667 | (277) | (285) | 1,624 | 2,280 | 1,954
Net income (loss) attributable to common stockholders | $ 45 | $ 1,308 | $ 872 | $ (603) | $ 1,159 | $ 415 | $ (277) | $ (285) | $ 1,622 | $ 1,076 | $ 436
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basic (in usd per share) | $ 0.00 | $ 0.04 | $ 0.03 | $ (0.02) | $ 0.04 | $ 0.07 | $ (0.05) | $ (0.05) | $ 0.05 | $ 0.09 | $ 0.09
Diluted (in usd per share) | $ 0.00 | $ 0.04 | $ 0.02 | $ (0.02) | $ 0.03 | $ 0.06 | $ (0.05) | $ (0.05) | $ 0.05 | $ 0.08 | $ 0.08

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