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Goodwill and Intangible Assets
6 Months Ended
Mar. 31, 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 March 31,
 
Six Months Ended March 31,
 
2017
 
2016
 
2017
 
2016
 
(In thousands)
Cost of revenues
$
1,687

 
$
1,840

 
$
3,373

 
$
3,747

Selling, general and administrative expenses
1,625

 
1,667

 
3,259

 
3,340

 
$
3,312

 
$
3,507

 
$
6,632

 
$
7,087



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 $147.8 million and $149.4 million as of March 31, 2017 and September 30, 2016, respectively.

Estimated future intangible asset amortization expense associated with intangible assets existing at March 31, 2017 was as follows (in thousands):
Year Ended September 30,
 
2017 (excluding the six months ended March 31, 2017)
$
5,923

2018
6,254

2019
5,741

2020
3,555

2021
2,382

Thereafter
2,456


$
26,311


The following table summarizes changes to goodwill during the six months ended March 31, 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
(5,538
)
 

 
(457
)
 
(5,995
)
Balance at March 31, 2017
$
577,182

 
$
146,648

 
$
68,590

 
$
792,420