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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2019
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 year ended September 30,
| 2019 |  | 2018 (as adjusted)* |  | 2017 (as adjusted)*
Numerator: |  |  |  |  |
Net income | $ | 9,958 |  |  | $ | 1,631 |  |  | $ | 9,403 |
Denominator: |  |  |  |  |
Denominator basic net income per common share — weighted average shares outstanding | 27,905 |  |  | 27,083 |  |  | 26,432 |
Effect of dilutive securities: |  |  |  |  |
Stock options and restricted stock units | 649 |  |  | 569 |  |  | 667 |
Denominator diluted net income per common share — adjusted weighted average shares | 28,554 |  |  | 27,652 |  |  | 27,099 |
Net income per common share, basic | $ | 0.36 |  |  | $ | 0.06 |  |  | $ | 0.36 |
Net income per common share, diluted | $ | 0.35 |  |  | $ | 0.06 |  |  | $ | 0.35 |
*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)”, which we adopted on October 1, 2018.
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] | he adoption of the standard related to the new revenue recognition impacted our reported results:
|  | Fiscal year ended September 30, 2018
(in thousands, except per common share data) |  | As Reported |  | Impact of Adoption* |  | As Adjusted
Revenue |  | $ | 228,366 |  |  | $ | (1,473 | ) |  | $ | 226,893 |
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 |
*The impact of the adoption of ASU 2014-09 solely impacts the results of our IoT Solutions segment. 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
|  | Fiscal year ended September 30, 2017
(in thousands, except per common share data) |  | As Reported |  | Impact of Adoption* |  | As Adjusted
Revenue |  | $ | 181,634 |  |  | $ | (294 | ) |  | $ | 181,340 |
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 |
*The impact of the adoption of ASU 2014-09 solely impacts the results of our IoT Solutions segment.
|  | September 30, 2018
(in thousands) |  | As Reported |  | Impact of Adoption |  | As Adjusted
Accounts receivable, net |  | $ | 50,817 |  |  | $ | (998 | ) |  | $ | 49,819 |
Property, equipment and improvements, net |  | $ | 6,270 |  |  | $ | 2,084 |  |  | $ | 8,354 |
Deferred tax assets |  | $ | 6,665 |  |  | $ | (65 | ) |  | $ | 6,600 |
Unearned revenue current |  | $ | 2,579 |  |  | $ | 598 |  |  | $ | 3,177 |
Other non-current liabilities |  | $ | 510 |  |  | $ | 210 |  |  | $ | 720 |
Retained earnings |  | $ | 151,748 |  |  | $ | 213 |  |  | $ | 151,961 |
|  | September 30, 2017
(in thousands) |  | As Reported |  | Impact of Adoption |  | As Adjusted
Accounts receivable, net |  | $ | 28,855 |  |  | $ | — |  |  | $ | 28,855 |
Property, equipment and improvements, net |  | $ | 12,801 |  |  | $ | 440 |  |  | $ | 13,241 |
Deferred tax assets |  | $ | 9,211 |  |  | $ | 67 |  |  | $ | 9,278 |
Unearned revenue current |  | $ | 1,343 |  |  | $ | 469 |  |  | $ | 1,812 |
Other non-current liabilities |  | $ | 654 |  |  | $ | 153 |  |  | $ | 807 |
Retained earnings |  | $ | 150,478 |  |  | $ | (115 | ) |  | $ | 150,363 |

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