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GOODWILL AND INTANGIBLE ASSETS (Tables) | 3 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Goodwill | The changes in the carrying amount of the Company’s goodwill and intangible assets for the three months ended December 31, 2017 and 2016 were as follows:
| 2017 |  | 2016
| (Dollars in Thousands)
Goodwill |  |  |
Balance as of September 30, | $ | 98,723 |  |  | $ | 36,928 |
Acquisitions during the period | — |  |  | 61,970 |
Write-offs during the period | — |  |  | — |
Balance as of December 31, | $ | 98,723 |  |  | $ | 98,898 |
| Trademark(1) |  | Non-Compete(2) |  | Customer Relationships(3) |  | All Others(4) |  | Total
Intangibles |
Balance as of September 30, 2017 | $ | 10,051 |  |  | $ | 1,782 |  |  | $ | 31,707 |  |  | $ | 8,638 |  |  | $ | 52,178 |
Acquisitions during the period | — |  |  | — |  |  | — |  |  | 38 |  |  | 38 |
Amortization during the period | (159 | ) |  | (132 | ) |  | (1,160 | ) |  | (230 | ) |  | (1,681 | )
Write-offs during the period | — |  |  | — |  |  | — |  |  | (14 | ) |  | (14 | )
Balance as of December 31, 2017 | $ | 9,892 |  |  | $ | 1,650 |  |  | $ | 30,547 |  |  | $ | 8,432 |  |  | $ | 50,521 |
Gross carrying amount | $ | 10,990 |  |  | $ | 2,480 |  |  | $ | 57,810 |  |  | $ | 10,540 |  |  | $ | 81,820 |
Accumulated amortization | (1,098 | ) |  | (830 | ) |  | (17,015 | ) |  | (1,565 | ) |  | (20,508 | )
Accumulated impairment | — |  |  | — |  |  | (10,248 | ) |  | (543 | ) |  | (10,791 | )
Balance as of December 31, 2017 | $ | 9,892 |  |  | $ | 1,650 |  |  | $ | 30,547 |  |  | $ | 8,432 |  |  | $ | 50,521 |
(1) Book amortization period of 5-15 years. Amortized using the straight line and accelerated methods. (2) Book amortization period of 3-5 years. Amortized using the straight line method. (3) Book amortization period of 10-30 years. Amortized using the accelerated method. (4) Book amortization period of 3-20 years. Amortized using the straight line method.
| Trademark(1) |  | Non-Compete(2) |  | Customer Relationships(3) |  | All Others(4) |  | Total
Intangibles |
Balance as of September 30, 2016 | $ | 5,149 |  |  | $ | 127 |  |  | $ | 20,590 |  |  | $ | 3,055 |  |  | $ | 28,921 |
Acquisitions during the period | 5,480 |  |  | 2,210 |  |  | 32,230 |  |  | 6,156 |  |  | 46,076 |
Amortization during the period | (120 | ) |  | (86 | ) |  | (1,193 | ) |  | (126 | ) |  | (1,525 | )
Write-offs during the period | — |  |  | — |  |  | — |  |  | — |  |  | — |
Balance as of December 31, 2016 | $ | 10,509 |  |  | $ | 2,251 |  |  | $ | 51,627 |  |  | $ | 9,085 |  |  | $ | 73,472 |
Gross carrying amount | $ | 10,970 |  |  | $ | 2,510 |  |  | $ | 58,270 |  |  | $ | 9,711 |  |  | $ | 81,461 |
Accumulated amortization | (461 | ) |  | (259 | ) |  | (6,643 | ) |  | (626 | ) |  | (7,989 | )
Balance as of December 31, 2016 | $ | 10,509 |  |  | $ | 2,251 |  |  | $ | 51,627 |  |  | $ | 9,085 |  |  | $ | 73,472 |
(1) Book amortization period of 15 years. Amortized using the straight line and accelerated methods. (2) Book amortization period of 3 years. Amortized using the straight line method. (3) Book amortization period of 10-30 years. Amortized using the accelerated method. (4) Book amortization period of 3-20 years. Amortized using the straight line method.
Schedule of Future Amortization Expense | The estimated amortization expense of intangible assets assumes no activities, such as acquisitions, which would result in additional amortizable intangible assets. Estimated amortization expense of intangible assets in the remaining nine months of fiscal 2018 and subsequent fiscal years is as follows:
| (Dollars in Thousands)
Remaining in 2018 | $ | 6,028 |
2019 | 7,151 |
2020 | 5,753 |
2021 | 5,184 |
2022 | 4,262 |
2023 | 3,625 |
Thereafter | 18,518 |
Total anticipated intangible amortization | $ | 50,521 |

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