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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2019
Income Tax Disclosure [Abstract] |
Schedule of Income Taxes from Continuing Operations | Income taxes from continuing operations in the accompanying consolidated statements of operations for the years ended September 30 are as follows (in thousands):
|  | 2019 |  |  | 2018 |  |  | 2017 |
Current provision (benefit): |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal |  | $ | 1,355 |  |  | $ | (890 | ) |  | $ | 2,125 |
U.S. State |  |  | 192 |  |  |  | 51 |  |  |  | (72 | )
International |  |  | 41 |  |  |  | 41 |  |  |  | 54 |
Total current provision (benefit) |  |  | 1,588 |  |  |  | (798 | ) |  |  | 2,107 |
Deferred provision (benefit): |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal |  |  | (1,505 | ) |  |  | (2,006 | ) |  |  | 1,085 |
U.S. State |  |  | (117 | ) |  |  | (271 | ) |  |  | (85 | )
International |  |  | — |  |  |  | — |  |  |  | — |
Total deferred (benefit) provision (1) |  |  | (1,622 | ) |  |  | (2,277 | ) |  |  | 1,000 |
Total (benefit) provision |  | $ | (34 | ) |  | $ | (3,075 | ) |  | $ | 3,107 |
Schedule of Reconciliation Difference of Income Taxes | The reconciliation of the difference between amounts calculated at the statutory U.S. federal tax rate of 21%, 24.5% and 35% for fiscal 2019, 2018 and 2017, respectively, and the Company’s effective tax rate from continuing operations is as follows (in thousands):
|  | 2019 |  |  | 2018 |  |  | 2017 |
Amount at statutory U.S. federal income tax rate |  | $ | 1,587 |  |  | $ | (1,845 | ) |  | $ | 2,461 |
Change because of the following items: |  |  |  |  |  |  |  |  |  |  |  |
State income taxes, net of federal benefit |  |  | (452 | ) |  |  | (724 | ) |  |  | (13 | )
U.S. Federal and foreign research and development credits |  |  | (2,464 | ) |  |  | (1,710 | ) |  |  | (706 | )
Foreign and state rate differential |  |  | 156 |  |  |  | 371 |  |  |  | 948 |
Valuation allowance change |  |  | 671 |  |  |  | 960 |  |  |  | 665 |
Stock-based compensation (1) |  |  | (163 | ) |  |  | (2,063 | ) |  |  | 330 |
Contingent consideration (gain) expense and related foreign currency revaluation |  |  | (61 | ) |  |  | 142 |  |  |  | 125 |
U.S. Federal and state rate change |  |  | 44 |  |  |  | 1,582 |  |  |  | — |
Tax reserve change |  |  | 770 |  |  |  | 158 |  |  |  | (52 | )
Foreign-derived income deduction |  |  | (150 | ) |  |  | — |  |  |  | — |
Federal manufacturing deduction |  |  | — |  |  |  | — |  |  |  | (313 | )
Other |  |  | 28 |  |  |  | 54 |  |  |  | (338 | )
Income tax provision |  | $ | (34 | ) |  | $ | (3,075 | ) |  | $ | 3,107 |
Schedule of Deferred Income Taxes | The components of deferred income taxes consisted of the following as of September 30 and result from differences in the recognition of transactions for income tax and financial reporting purposes (in thousands):
|  | 2019 |  |  | 2018 |
Depreciable assets |  | $ | (905 | ) |  | $ | (1,019 | )
Deferred revenue |  |  | 1,554 |  |  |  | — |
Accruals and reserves |  |  | 585 |  |  |  | 1,308 |
Stock-based compensation |  |  | 2,213 |  |  |  | 1,798 |
Impaired strategic investments |  |  | 1,666 |  |  |  | 1,687 |
NOL carryforwards |  |  | 3,308 |  |  |  | 4,637 |
U.S. Federal and state R&D credits |  |  | 2,394 |  |  |  | 1,896 |
Other |  |  | 689 |  |  |  | 538 |
Valuation allowance |  |  | (5,328 | ) |  |  | (4,541 | )
Total deferred tax assets |  | $ | 6,176 |  |  | $ | 6,304 |
Summary of Reconciliation of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits, excluding interest and penalties, is as follows (in thousands):
|  | 2019 |  |  | 2018 |  |  | 2017 |
Beginning of fiscal year |  | $ | 1,559 |  |  | $ | 1,481 |  |  | $ | 1,508 |
Increases in tax positions for prior years |  |  | 278 |  |  |  | 61 |  |  |  | 8 |
Decreases in tax positions for prior years |  |  | (2 | ) |  |  | — |  |  |  | (35 | )
Increases in tax positions for current year |  |  | 735 |  |  |  | 735 |  |  |  | 216 |
Settlements with taxing authorities |  |  | — |  |  |  | (613 | ) |  |  | — |
Lapse of the statute of limitations |  |  | (247 | ) |  |  | (105 | ) |  |  | (216 | )
End of fiscal year |  | $ | 2,323 |  |  | $ | 1,559 |  |  | $ | 1,481 |

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