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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The following table summarizes changes in the balance of goodwill during the three months ended December 31, 2018 (amounts shown in thousands):
Balance at September 30, 2018 | $ | 34,407
A2iA purchase accounting adjustment | 121
Foreign currency effect on goodwill | (470)
Balance at December 31, 2018 | $ | 34,058
Schedule of Intangible Assets | Intangible assets as of December 31, 2018 and September 30, 2018, respectively, are summarized as follows (amounts shown in thousands, except for years):
December 31, 2018: | Weighted Average Amortization Period |  | Cost |  | Accumulated Amortization |  | Net
Completed technologies | 6.4 years |  | $ | 20,341 |  | $ | 4,113 |  | $ | 16,228
Customer relationships | 4.8 years |  | 17,628 |  | 3,472 |  | 14,156
Trade names | 4.5 years |  | 618 |  | 260 |  | 358
Total intangible assets |  |  | $ | 38,587 |  | $ | 7,845 |  | $ | 30,742
September 30, 2018: | Weighted Average Amortization Period |  | Cost |  | Accumulated Amortization |  | Net
Completed technologies | 6.4 years |  | $ | 20,341 |  | $ | 3,070 |  | $ | 17,271
Customer relationships | 4.8 years |  | 17,628 |  | 2,351 |  | 15,277
Trade names | 4.5 years |  | 618 |  | 219 |  | 399
Total intangible assets |  |  | $ | 38,587 |  | $ | 5,640 |  | $ | 32,947
Schedule of Estimated Future Amortization Expense | The estimated future amortization expense related to intangible assets for each of the five succeeding fiscal years is expected to be as follows (amounts shown in thousands):
| Estimated Future Amortization Expense
2019 (remaining nine months) | $ | 5,345
2020 | 6,510
2021 | 6,238
2022 | 5,835
2023 | 3,830
2024 | 1,813
Thereafter | 1,171
Total | $ | 30,742

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