Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and acquired intangible assets consisted of the following:



	March 31, 2018						September 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
	(in thousands)
Goodwill (not amortized)					$	1,191,603					$	1,182,772
Intangible assets with finite lives (amortized) (1):
Purchased software	$	365,904	$	243,809	$	122,095	$	362,955	$	228,377	$	134,578
Capitalized software	22,877		22,877		—		22,877		22,877		—
Customer lists and relationships	362,895		259,569		103,326		359,932		241,554		118,378
Trademarks and trade names	19,270		14,661		4,609		19,138		14,186		4,952
Other	4,096		4,096		—		4,030		4,030		—
	$	775,042	$	545,012	$	230,030	$	768,932	$	511,024	$	257,908
Total goodwill and acquired intangible assets					$	1,421,633					$	1,440,680

(1) The weighted-average useful lives of purchased software, customer lists and relationships, and trademarks and trade names with a remaining net book value are 9 years, 10 years, and 10 years, respectively.

Schedule of Goodwill

Changes in goodwill presented by reportable segments were as follows:



	Software Products		Professional Services		Total
	(in thousands)
Balance, October 1, 2017	$	1,152,917	$	29,855	$	1,182,772
Acquisition	4,350		—		4,350
Foreign currency translation adjustment	4,368		113		4,481
Balance, March 31, 2018	$	1,161,635	$	29,968	$	1,191,603

Amortization of Intangible Assets

The aggregate amortization expense for intangible assets with finite lives was classified in our Consolidated Statements of Operations as follows:



	Three months ended				Six months ended
	March 31, 2018		April 1, 2017		March 31, 2018		April 1, 2017
	(in thousands)
Amortization of acquired intangible assets	$	7,895	$	7,946	$	15,716	$	16,013
Cost of license and subscription revenue	6,556		6,389		13,231		12,777
Total amortization expense	$	14,451	$	14,335	$	28,947	$	28,790