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Quarterly Operating Results (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Apr. 30, 2014
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Jan. 31, 2014
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Oct. 31, 2013
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Jul. 31, 2013
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Apr. 30, 2013
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Jan. 31, 2013
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Oct. 31, 2012
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Jul. 31, 2012
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Apr. 30, 2014
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Apr. 30, 2013
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Apr. 30, 2012
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| Quarterly Financial Information [Line Items] | ||||||||||||||||
| Revenue | $ 43,078 | $ 43,600 | $ 41,148 | $ 40,319 | $ 38,924 | $ 38,920 | $ 35,148 | $ 33,820 | $ 168,145 | $ 146,812 | $ 106,136 | |||||
| Cost of revenue | 14,522 | 13,758 | 12,508 | 12,117 | 12,319 | 12,130 | 11,672 | 11,229 | 52,905 | [1] | 47,350 | [1] | 37,416 | [1] | ||
| Gross profit | 28,556 | 29,842 | 28,640 | 28,202 | 26,605 | 26,790 | 23,476 | 22,591 | 115,240 | 99,462 | 68,720 | |||||
| Operating expenses: | ||||||||||||||||
| Sales and marketing | 23,884 | 20,765 | 20,837 | 20,996 | 22,095 | 20,103 | 17,165 | 13,751 | 86,482 | [1] | 73,114 | [1] | 49,273 | [1] | ||
| Research and development | 9,832 | 9,036 | 9,793 | 8,924 | 8,691 | 8,822 | 7,496 | 7,160 | 37,585 | [1] | 32,169 | [1] | 21,266 | [1] | ||
| General and administrative | 6,521 | 7,674 | 3,639 | 8,536 | 9,672 | 8,125 | 6,533 | 6,660 | 26,370 | [1] | 30,990 | [1] | 20,896 | [1] | ||
| Acquisition-related and other | 366 | 31 | 8,283 | 7,504 | 7,819 | 1,583 | 1,085 | 16,184 | 10,487 | |||||||
| Amortization of acquired intangible assets | 288 | 282 | 283 | 282 | 282 | 267 | 1,135 | 549 | ||||||||
| Total operating expenses | 40,891 | 37,788 | 42,835 | 46,242 | 48,559 | 38,900 | 32,279 | 27,571 | 167,756 | 147,309 | 91,435 | |||||
| Operating loss | (12,335) | (7,946) | (14,195) | (18,040) | (21,954) | (12,110) | (8,803) | (4,980) | (52,516) | (47,847) | (22,715) | |||||
| Total other income (expense), net | (316) | (268) | (249) | 3 | (483) | 8 | 54 | (407) | (830) | (828) | (803) | |||||
| Net loss before income taxes | (12,651) | (8,214) | (14,444) | (18,037) | (22,437) | (12,102) | (8,749) | (5,387) | (53,346) | (48,675) | (23,518) | |||||
| Income tax expense (benefit) | (418) | 179 | 130 | (391) | 583 | (2,295) | 271 | 269 | (500) | (1,172) | 811 | |||||
| Net loss from continuing operations | (12,233) | (8,393) | (14,574) | (17,646) | (23,020) | (9,807) | (9,020) | (5,656) | (52,846) | (47,503) | (24,329) | |||||
| Income (loss) from discontinued operations, net of tax | (11,448) | 430 | 420 | 278 | (124) | (1,020) | (2,222) | (12,883) | (10,320) | (16,249) | ||||||
| Net loss applicable to common stockholders | $ (23,681) | $ (7,963) | $ (14,154) | $ (17,368) | $ (23,144) | $ (10,827) | $ (11,242) | $ (18,539) | $ (63,166) | $ (63,752) | $ (24,329) | |||||
| Basic earnings (loss) per share: | ||||||||||||||||
| Continuing operations | $ (0.16) | $ (0.11) | $ (0.20) | $ (0.23) | $ (0.32) | $ (0.14) | $ (0.13) | $ (0.09) | ||||||||
| Discontinued operations | $ (0.15) | $ 0.01 | $ 0.01 | $ (0.01) | $ (0.03) | $ (0.21) | ||||||||||
| Basic loss per share: | $ (0.31) | $ (0.10) | $ (0.19) | $ (0.23) | $ (0.32) | $ (0.15) | $ (0.16) | $ (0.30) | ||||||||
| Diluted earnings per share: | ||||||||||||||||
| Continuing operations | ||||||||||||||||
| Discontinued operations | $ 0.01 | $ 0.01 | ||||||||||||||
| Diluted earnings per share: | $ 0.01 | $ 0.01 | ||||||||||||||
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