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Quarterly Information (Unaudited) (Tables) | 12 Months Ended
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Sep. 30, 2016
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Data | The following table sets forth selected quarterly financial data for 2016, 2015 and 2014 (shown in thousands except share data):
|  | 2016 (by quarter) |
|  | 1 |  |  | 2 |  |  | 3 |  |  | 4 |
Revenue |  | $ | 7,404 |  |  | $ | 8,522 |  |  | $ | 9,105 |  |  | $ | 9,670 |
Cost of revenue |  |  | 942 |  |  |  | 720 |  |  |  | 793 |  |  |  | 940 |
Operating expenses |  |  | 6,804 |  |  |  | 7,171 |  |  |  | 7,618 |  |  |  | 7,889 |
Operating income (loss) |  |  | (342 | ) |  |  | 631 |  |  |  | 694 |  |  |  | 841 |
Other income (expense), net |  |  | 36 |  |  |  | 30 |  |  |  | 45 |  |  |  | 23 |
Income tax benefit (provision) |  |  | (16 | ) |  |  | (79 | ) |  |  | — |  |  |  | 96 |
Net income (loss) |  |  | (322 | ) |  |  | 582 |  |  |  | 739 |  |  |  | 960 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic income (loss) per share |  |  | (0.01 | ) |  |  | 0.02 |  |  |  | 0.02 |  |  |  | 0.03 |
Shares used in calculating net income (loss) per share - basic |  |  | 31,094,417 |  |  |  | 31,325,577 |  |  |  | 31,823,386 |  |  |  | 32,086,223 |
Diluted income (loss) per share |  |  | (0.01 | ) |  |  | 0.02 |  |  |  | 0.02 |  |  |  | 0.03 |
Shares used in calculating net income (loss) per share - diluted |  |  | 31,094,417 |  |  |  | 33,133,920 |  |  |  | 34,531,964 |  |  |  | 34,859,861 |
|  | 2015 (by quarter) |
|  | 1 |  |  | 2 |  |  | 3 |  |  | 4 |
Revenue |  | $ | 5,389 |  |  | $ | 5,672 |  |  | $ | 6,440 |  |  | $ | 7,866 |
Cost of revenue |  |  | 497 |  |  |  | 558 |  |  |  | 591 |  |  |  | 825 |
Operating expenses |  |  | 4,758 |  |  |  | 4,628 |  |  |  | 5,539 |  |  |  | 6,079 |
Operating income (loss) |  |  | 134 |  |  |  | 486 |  |  |  | 310 |  |  |  | 962 |
Other income (expense), net |  |  | 15 |  |  |  | 21 |  |  |  | 30 |  |  |  | 25 |
Income tax benefit (provision) |  |  | (3 | ) |  |  | — |  |  |  | 578 |  |  |  | (32 | )
Net income (loss) |  |  | 146 |  |  |  | 507 |  |  |  | 918 |  |  |  | 955 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic income (loss) per share |  |  | 0.00 |  |  |  | 0.02 |  |  |  | 0.03 |  |  |  | 0.03 |
Shares used in calculating net income (loss) per share - basic |  |  | 30,618,097 |  |  |  | 30,697,391 |  |  |  | 30,764,694 |  |  |  | 30,969,157 |
Diluted income (loss) per share |  |  | 0.00 |  |  |  | 0.02 |  |  |  | 0.03 |  |  |  | 0.03 |
Shares used in calculating net income (loss) per share - diluted |  |  | 31,173,815 |  |  |  | 31,321,259 |  |  |  | 31,645,696 |  |  |  | 31,664,178 |
|  | 2014 (by quarter) |
|  | 1 |  |  | 2 |  |  | 3 |  |  | 4 |
Revenue |  | $ | 4,463 |  |  | $ | 4,484 |  |  | $ | 4,660 |  |  | $ | 5,544 |
Cost of revenue |  |  | 571 |  |  |  | 450 |  |  |  | 608 |  |  |  | 520 |
Operating expenses |  |  | 5,373 |  |  |  | 6,246 |  |  |  | 5,702 |  |  |  | 5,089 |
Operating income (loss) |  |  | (1,481 | ) |  |  | (2,212 | ) |  |  | (1,650 | ) |  |  | (65 | )
Other income (expense), net |  |  | 13 |  |  |  | 19 |  |  |  | 17 |  |  |  | 67 |
Income tax benefit (provision) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net income (loss) |  |  | (1,468 | ) |  |  | (2,193 | ) |  |  | (1,633 | ) |  |  | 2 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic income (loss) per share |  |  | (0.05 | ) |  |  | (0.07 | ) |  |  | (0.05 | ) |  |  | 0.00 |
Shares used in calculating net income (loss) per share - basic |  |  | 30,402,397 |  |  |  | 30,453,455 |  |  |  | 30,481,168 |  |  |  | 30,510,587 |
Diluted income (loss) per share |  |  | (0.05 | ) |  |  | (0.07 | ) |  |  | (0.05 | ) |  |  | 0.00 |
Shares used in calculating net income (loss) per share - diluted |  |  | 30,402,397 |  |  |  | 30,453,455 |  |  |  | 30,481,168 |  |  |  | 31,022,148 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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