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Consolidated Statements of Stockholders' Equity - USD ($) | Total | Common Stock [Member] | Common Stock [Member] IDchecker [Member] | Additional Paid-In Capital [Member] | Accumulated Deficit [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Sep. 30, 2013 | $ 25,729,000 | $ 30,000 |  | $ 56,432,000 | $ (30,735,000) | $ 2,000
Beginning Balance, shares at Sep. 30, 2013 |  | 30,361,442 |  |  |  |
Exercise of stock options | $ 119,000 | $ 1,000 |  | 118,000 |  |
Exercise of stock options, shares | 108,135 | 105,280 |  |  |  |
Settlement of restricted stock units | $ (48,000) |  |  | (48,000) |  |
Settlement of restricted stock units, shares |  | 54,358 |  |  |  |
Stock-based compensation expense | 3,444,000 |  |  | 3,444,000 |  |
Components of other comprehensive income: |  |  |  |  |  |
Net income (loss) | (5,292,000) |  |  |  | (5,292,000) |
Currency translation adjustment | 0 |  |  |  |  |
Change in unrealized gain (loss) on investments | (10,000) |  |  |  |  | (10,000)
Other comprehensive income (loss) | (5,302,000) |  |  |  |  |
Ending Balance at Sep. 30, 2014 | 23,942,000 | $ 31,000 |  | 59,946,000 | (36,027,000) | (8,000)
Ending Balance, shares at Sep. 30, 2014 |  | 30,521,080 |  |  |  |
Exercise of stock options | $ 246,000 |  |  | 246,000 |  |
Exercise of stock options, shares | 232,203 | 232,203 |  |  |  |
Settlement of restricted stock units, shares |  | 255,041 |  |  |  |
Acquisition-related closing shares | $ 347,000 | $ 1,000 |  | 346,000 |  |
Acquisition-related closing shares, shares |  | 712,790 |  |  |  |
Stock-based compensation expense | 3,367,000 |  |  | 3,367,000 |  |
Components of other comprehensive income: |  |  |  |  |  |
Net income (loss) | 2,526,000 |  |  |  | 2,526,000 |
Currency translation adjustment | 0 |  |  |  |  |
Change in unrealized gain (loss) on investments | 5,000 |  |  |  |  | 5,000
Other comprehensive income (loss) | 2,531,000 |  |  |  |  |
Ending Balance at Sep. 30, 2015 | $ 30,433,000 | $ 32,000 |  | 63,905,000 | (33,501,000) | (3,000)
Ending Balance, shares at Sep. 30, 2015 | 31,721,114 | 31,721,114 |  |  |  |
Exercise of stock options | $ 1,755,000 | $ 1,000 |  | 1,754,000 |  |
Exercise of stock options, shares | 661,663 | 661,663 |  |  |  |
Settlement of restricted stock units, shares |  | 261,621 |  |  |  |
Acquisition-related closing shares, shares |  |  | 137,306 |  |  |
Stock-based compensation expense | $ 4,079,000 |  |  | 4,079,000 |  |
Amortization of closing shares | 1,298,000 |  |  | 1,298,000 |  |
Components of other comprehensive income: |  |  |  |  |  |
Net income (loss) | 1,959,000 |  |  |  | 1,959,000 |
Currency translation adjustment | (46,000) |  |  |  |  | (46,000)
Change in unrealized gain (loss) on investments | 7,000 |  |  |  |  | 7,000
Other comprehensive income (loss) | 1,920,000 |  |  |  |  |
Ending Balance at Sep. 30, 2016 | $ 39,485,000 | $ 33,000 |  | $ 71,036,000 | $ (31,542,000) | $ (42,000)
Ending Balance, shares at Sep. 30, 2016 | 32,781,704 | 32,781,704 |  |  |  |

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