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Goodwill and Intangible Assets
9 Months Ended
Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets
Amortization expense associated with our intangible assets, which has been reflected as a separate operating expense caption within the accompanying condensed consolidated statements of income and comprehensive income, consisted of the following: 
 
Quarter Ended June 30,
 
Nine Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
 
(In thousands)
Cost of revenues
$
1,723

 
$
1,805

 
$
5,096

 
$
5,552

Selling, general and administrative expenses
1,642

 
1,681

 
4,901

 
5,021

 
$
3,365

 
$
3,486

 
$
9,997

 
$
10,573



Cost of revenues reflects our amortization of completed technology and selling, general and administrative expenses reflects our amortization of other intangible assets. Intangible assets, gross were $149.4 million as of June 30, 2017 and September 30, 2016.

Estimated future intangible asset amortization expense associated with intangible assets existing at June 30, 2017 was as follows (in thousands):
Year Ended September 30,
 
2017 (excluding the nine months ended June 30, 2017)
$
2,686

2018
6,448

2019
5,932

2020
3,628

2021
2,408

Thereafter
2,480


$
23,582


The following table summarizes changes to goodwill during the nine months ended June 30, 2017, both in total and as allocated to our segments:
 
Applications
 
Scores
 
Decision Management Software
 
Total
 
(In thousands)
Balance at September 30, 2016
$
582,720

 
$
146,648

 
$
69,047

 
$
798,415

Foreign currency translation adjustment
1,305

 

 
71

 
1,376

Balance at June 30, 2017
$
584,025

 
$
146,648

 
$
69,118

 
$
799,791