Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortization Expense

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,
	2015		2014		2015		2014
	(In thousands)
Cost of revenues	$	1,901	$	1,823	$	3,737	$	3,622
Selling, general and administrative expenses	1,614		1,085		2,710		2,299
	$	3,515	$	2,908	$	6,447	$	5,921

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated future intangible asset amortization expense associated with intangible assets existing at March 31, 2015, was as follows (in thousands):

Year Ended September 30,
2015 (excluding the six months ended March 31, 2015)	$	7,091
2016	13,953
2017	12,850
2018	5,898
2019	5,385
Thereafter	8,405
	$	53,582

Schedule of Goodwill

The following table summarizes changes to goodwill during the six months ended March 31, 2015, both in total and as allocated to our segments:

	Applications			Scores		Tools			Total
	(In thousands)
Balance at September 30, 2014	$	560,295		$	146,648	$	72,985		$	779,928
Addition from acquisitions	46,188			—		—			46,188
Foreign currency translation adjustment	(14,695		)	—		(2,304		)	(16,999		)
Balance at March 31, 2015	$	591,788		$	146,648	$	70,681		$	809,117