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GOODWILL AND INTANGIBLE ASSETS (Tables)
 3 Months Ended
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