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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Mar. 31, 2020
Stockholders Equity Note [Abstract] |
Accumulated Other Comprehensive Loss | Accumulated other comprehensive loss consisted of the following (in thousands):
|  | Six Month Ended March 31, 2020 |
Balance at October 1, 2019 |  | $ | (15,757 | )
Foreign currency translation adjustments |  |  | (451 | )
Balance at March 31, 2020 |  | $ | (16,208 | )
|  | Six Month Ended March 31, 2019 |
Balance at October 1, 2018 |  | $ | (15,619 | )
Changes in unrealized gain on available-for-sale securities, net of tax |  |  | 83 |
Foreign currency translation adjustments |  |  | 20 |
Balance at March 31, 2019 |  | $ | (15,516 | )

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