| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 |
|---|---|---|---|---|---|---|---|---|---|
Foreign Currency Transaction Gain (Loss) Including Derivatives, Before Tax | |||||||||
-354 | -577 | -355 | - | - | - | - | - | - | - |
Revenues | |||||||||
Revenue from Contract with Customer, Excluding Assessed Tax | |||||||||
321,607 | 278,889 | 230,828 | 197,925 | 164,284 | 133,579 | 107,962 | 91,420 | 76,212 | 65,432 |
Cost of revenues | |||||||||
69,517 | 66,185 | 51,580 | 43,128 | 34,327 | 28,963 | 24,660 | 18,404 | 13,247 | 11,204 |
Gross profit | |||||||||
252,090 | 212,704 | 179,248 | 154,797 | 129,957 | 104,616 | 83,302 | 73,016 | 62,965 | 54,228 |
Operating expenses: | |||||||||
Research and development | |||||||||
68,239 | 53,255 | 42,816 | 36,591 | 30,438 | 26,320 | 21,678 | 20,195 | 19,633 | 15,780 |
Sales and marketing | |||||||||
70,833 | 70,039 | 63,855 | 58,985 | 50,397 | 48,049 | 42,523 | 37,738 | 31,526 | 29,056 |
General and administrative | |||||||||
40,765 | 39,049 | 35,334 | 29,114 | 24,316 | 21,000 | 16,792 | 12,079 | 8,900 | 8,183 |
Total operating expenses | |||||||||
179,837 | 162,343 | 142,005 | 124,690 | 105,151 | 95,369 | 80,993 | 70,012 | 60,059 | 53,019 |
Income from operations | |||||||||
72,253 | 50,361 | 37,243 | 30,107 | 24,806 | 9,247 | 2,309 | 3,004 | 2,906 | 1,209 |
Other income (expense), net: | |||||||||
Interest expense | |||||||||
106 | 172 | 3 | 26 | 6 | 9 | 43 | 192 | 204 | 186 |
Interest income | |||||||||
8,443 | 6,080 | 2,674 | 1,320 | 570 | 452 | 375 | 14 | 14 | 3 |
Other expense, net | |||||||||
- | - | - | -972 | -850 | -1,077 | -600 | -247 | -346 | -383 |
Total other income, net | |||||||||
7,730 | 5,107 | 2,135 | 322 | -286 | -634 | -268 | -425 | -536 | -566 |
Income before income taxes | |||||||||
79,983 | 55,468 | 39,378 | 30,429 | 24,520 | 8,613 | 2,041 | 2,579 | 2,370 | 643 |
Income Tax Expense (Benefit) | |||||||||
10,647 | -1,836 | -1,062 | 11,205 | 8,655 | -21,631 | 500 | 358 | 416 | -204 |
Net Income (Loss) Attributable to Parent | |||||||||
69,336 | 57,304 | 40,440 | 19,224 | 15,865 | 30,244 | 1,541 | 2,221 | 1,954 | 847 |
Net income attributable to common stockholders | |||||||||
- | - | - | - | - | 30,244 | 1,539 | 1,049 | 436 | 179 |
Earnings Per Share [Abstract] | |||||||||
Basic (USD per share) | |||||||||
1.77 | 1.47 | 1.08 | 0.55 | 0.47 | 0.92 | 0.05 | 0.09 | 0.09 | 0.04 |
Diluted (USD per share) | |||||||||
1.68 | 1.37 | 1.01 | 0.50 | 0.42 | 0.81 | 0.04 | 0.08 | 0.08 | 0.04 |
Weighted average shares used in computing net income per share: | |||||||||
Basic (shares) | |||||||||
39,075 | 38,876 | 37,443 | 35,247 | 34,050 | 32,979 | 31,914 | 11,891 | 5,053 | 4,706 |
Weighted Average Number of Shares Outstanding, Diluted | |||||||||
41,345 | 41,897 | 40,071 | 38,369 | 38,184 | 37,170 | 35,973 | 28,352 | 24,194 | 23,562 |