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Goodwill and Intangible Assets
9 Months Ended
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
GOODWILL AND INTANGIBLE ASSETS
Goodwill
The Company had a goodwill balance of $34.0 million at June 30, 2018, representing the excess of costs over fair value of assets of businesses acquired. Goodwill acquired in a business combination and determined to have an indefinite useful life is not amortized, but instead is tested for impairment at least annually in accordance with ASC 350. The following table summarizes changes in the balance of goodwill during the nine months ended June 30, 2018 (amounts shown in thousands):
Balance at September 30, 2017
$
3,014

Acquisition of ICAR
6,852

Acquisition of A2iA
24,383

Foreign currency effect on goodwill
(200
)
Balance at June 30, 2018
$
34,049


Intangible assets
Intangible assets include the value assigned to purchased completed technology, customer relationships, and trade names. The estimated useful lives for all of these intangible assets range from two to seven years. Intangible assets as of June 30, 2018 and September 30, 2017, respectively, are summarized as follows (amounts shown in thousands, except for years):
June 30, 2018:
Weighted Average Amortization Period
 
Cost
 
Accumulated Amortization
 
Net
Completed technologies
6.4 years
 
$
20,341

 
$
2,150

 
$
18,191

Customer relationships
4.8 years
 
17,628

 
1,309

 
16,319

Trade names
4.5 years
 
618

 
180

 
438

Total intangible assets
 
 
$
38,587

 
$
3,639

 
$
34,948

September 30, 2017:
Weighted Average Amortization Period
 
Cost
 
Accumulated Amortization
 
Net
Completed technologies
6.0 years
 
$
2,370

 
$
833

 
$
1,537

Customer relationships
6.0 years
 
970

 
341

 
629

Trade names
5.0 years
 
230

 
99

 
131

Total intangible assets
 
 
$
3,570

 
$
1,273

 
$
2,297

Amortization expense related to acquired intangible assets was $1.1 million and $0.1 million for the three months ended June 30, 2018 and 2017, respectively, and $2.2 million and $0.4 million for the nine months ended June 30, 2018 and 2017, respectively, and is recorded within acquisition-related costs and expenses on the consolidated statements of operations and other comprehensive income (loss).
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
2018 (remaining three months)
$
1,815

2019
7,260

2020
6,631

2021
6,353

2022
5,942

2023
3,900

Thereafter
3,047

Total
$
34,948