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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2018
Accounting Policies [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share | The following table is a reconciliation of the numerators and denominators in the net income per common share calculations (in thousands, except per common share data):
| Fiscal years ended September 30,
| 2018 |  | 2017 |  | 2016
Numerator: |  |  |  |  |
Income from continuing operations | $ | 1,303 |  |  | $ | 9,366 |  |  | $ | 13,478 |
Income from discontinued operations, after income taxes | $ | — |  |  | $ | — |  |  | $ | 3,230 |
Net income | $ | 1,303 |  |  | $ | 9,366 |  |  | $ | 16,708 |
Denominator: |  |  |  |  |
Denominator for basic net income per common share — weighted average shares outstanding | 27,083 |  |  | 26,432 |  |  | 25,760 |
Effect of dilutive securities: |  |  |  |  |
Stock options and restricted stock units | 569 |  |  | 667 |  |  | 551 |
Denominator for diluted net income per common share — adjusted weighted average shares | 27,652 |  |  | 27,099 |  |  | 26,311 |
Basic net income per common share: |  |  |  |  |
Continuing operations | $ | 0.05 |  |  | $ | 0.35 |  |  | $ | 0.52 |
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | 0.13 |
Net income | $ | 0.05 |  |  | $ | 0.35 |  |  | $ | 0.65 |
Diluted net income per common share: |  |  |  |  |
Continuing operations | $ | 0.05 |  |  | $ | 0.35 |  |  | $ | 0.51 |
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | 0.12 |
Net income (1) | $ | 0.05 |  |  | $ | 0.35 |  |  | $ | 0.64 |
(1) Earnings per share presented are calculated by line item and may not add due to the use of rounded amounts.
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] | The adoption of the standard related to the new revenue recognition is expected to impact our reported results as follows:
|  | Fiscal year ended September 30, 2018
(in thousands, except per common share data) |  | As Reported |  | Impact of Adoption |  | As Adjusted
Revenue: |  |  |  |  |  |
Hardware product |  | $ | 191,050 |  |  | $ | — |  |  | $ | 191,050 |
Services and solutions |  | 37,316 |  |  | (1,473 | ) |  | 35,843 |
Total revenue |  | 228,366 |  |  | (1,473 | ) |  | 226,893 |
Cost of sales: |  |  |  |  |  |
Cost of hardware product |  | 96,332 |  |  | — |  |  | 96,332 |
Cost of services and solutions |  | 20,280 |  |  | (1,644 | ) |  | 18,636 |
Amortization |  | 2,871 |  |  | — |  |  | 2,871 |
Total cost of sales |  | 119,483 |  |  | (1,644 | ) |  | 117,839 |
Gross profit |  | 108,883 |  |  | 171 |  |  | 109,054 |
Operating expenses |  | 106,561 |  |  | (289 | ) |  | 106,272 |
Operating income |  | 2,322 |  |  | 460 |  |  | 2,782 |
Net income |  | $ | 1,303 |  |  | $ | 328 |  |  | $ | 1,631 |
Diluted earnings per share |  | $ | 0.05 |  |  | $ | 0.01 |  |  | $ | 0.06 |
|  | Fiscal year ended September 30, 2017
(in thousands, except per common share data) |  | As Reported |  | Impact of Adoption |  | As Adjusted
Revenue: |  |  |  |  |  |
Hardware product |  | $ | 166,480 |  |  | — |  |  | $ | 166,480 |
Services and solutions |  | 15,154 |  |  | (294 | ) |  | 14,860 |
Total revenue |  | 181,634 |  |  | (294 | ) |  | 181,340 |
Cost of sales: |  |  |  |  |  |
Cost of hardware product |  | 85,369 |  |  | — |  |  | 85,369 |
Cost of services and solutions |  | 7,647 |  |  | (353 | ) |  | 7,294 |
Amortization |  | 1,444 |  |  | — |  |  | 1,444 |
Total cost of sales |  | 94,460 |  |  | (353 | ) |  | 94,107 |
Gross profit |  | 87,174 |  |  | 59 |  |  | 87,233 |
Operating expenses |  | 78,367 |  |  | — |  |  | 78,367 |
Operating income |  | 8,807 |  |  | 59 |  |  | 8,866 |
Net income |  | $ | 9,366 |  |  | 37 |  |  | $ | 9,403 |
Diluted earnings per share |  | $ | 0.35 |  |  | $ | — |  |  | $ | 0.35 |
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
|  | September 30, 2018
(in thousands) |  | As Reported |  | Impact of Adoption |  | As Adjusted
Accounts receivable, net |  | $ | 50,817 |  |  | $ | (998 | ) |  | $ | 49,819 |
Other current assets |  | $ | 2,613 |  |  | $ | 885 |  |  | $ | 3,498 |
Deferred tax assets |  | $ | 6,665 |  |  | $ | (65 | ) |  | $ | 6,600 |
Other non-current assets |  | $ | 1,291 |  |  | $ | 1,199 |  |  | $ | 2,490 |
Other current liabilities |  | $ | 2,413 |  |  | $ | 598 |  |  | $ | 3,011 |
Other non-current liabilities |  | $ | 510 |  |  | $ | 210 |  |  | $ | 720 |
Stockholders' equity |  | $ | 330,280 |  |  | $ | 213 |  |  | $ | 330,493 |
|  | September 30, 2017
(in thousands) |  | As Reported |  | Impact of Adoption |  | As Adjusted
Other current assets |  | $ | 3,032 |  |  | $ | 172 |  |  | $ | 3,204 |
Deferred tax assets |  | $ | 9,211 |  |  | $ | 67 |  |  | $ | 9,278 |
Other non-current assets |  | $ | 269 |  |  | $ | 268 |  |  | $ | 537 |
Other current liabilities |  | $ | 2,113 |  |  | $ | 469 |  |  | $ | 2,582 |
Other non-current liabilities |  | $ | 654 |  |  | $ | 153 |  |  | $ | 807 |
Stockholders' equity |  | $ | 319,144 |  |  | $ | (115 | ) |  | $ | 319,029 |

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