FactSet’s identifiable intangible assets consist of acquired content databases, client relationships, software technology, non-compete agreements and trade names resulting from previous acquisitions, which have been fully integrated into the Company’s operations. The weighted average useful life of FactSet’s acquired identifiable intangible assets at

February 28, 2019

was

12.3

years. The Company amortizes intangible assets over their estimated useful lives, which are evaluated quarterly to determine whether events and circumstances warrant a revision to the remaining period of amortization. There have been

changes to the estimate of the remaining useful lives during the

first

six

months of fiscal

2019.

If indicators of impairment are present, amortizable intangible assets are tested for impairment comparing the carrying value to undiscounted cash flows and, if impaired, written down to fair value based on discounted cash flows.

impairment of intangible assets has been identified during any of the periods presented. The intangible assets have

assigned residual values.

The gross carrying amounts and accumulated amortization totals related to the Company’s identifiable intangible assets are as follows:

At February 28, 2019 (in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Data content	$	34,135	$	21,835	$	12,300
Client relationships		98,148		32,801		65,347
Software technology		106,231		50,837		55,394
Non-compete agreements		4,860		2,815		2,045
Trade names		4,068		2,745		1,323
Total	$	247,442	$	111,033	$	136,409

At August 31, 2018 (in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Data content	$	33,992	$	20,990	$	13,002
Client relationships		98,882		29,387		69,495
Software technology		106,505		44,231		62,274
Non-compete agreements		4,840		2,381		2,459
Trade names		4,070		2,365		1,705
Total	$	248,289	$	99,354	$	148,935

Amortization expense recorded for intangible assets was

$5.8

million and

$6.2

million for the

three

months ended

February 28, 2019

and

2018,

respectively. Amortization expense recorded for intangible assets was

$11.7

million and

$12.4

million for the

six

months ended

February 28, 2019

and

2018,

respectively. As of

February 28, 2019,

estimated intangible asset amortization expense for each of the next

five

years and thereafter is as follows

Fiscal Year (in thousands)	Estimated Amortization Expense
2019 (remaining six months)	$	11,927
2020		23,216
2021		21,252
2022		18,666
2023		13,844
Thereafter		47,504
Total	$	136,409