GOODWILL AND OTHER INTANGIBLES

6 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The following table provides changes in the carrying value of goodwill by segment during the six months ended March 31, 2019:



	At September 30, 2018		Goodwill from acquisitions		Other adjustments including currency translations			At March 31, 2019
Home & Building Products	$	420,850	$	300	$	(577	)	$	420,573
Telephonics	18,545		—		—			18,545
Total	$	439,395	$	300	$	(577	)	$	439,118

The following table provides the gross carrying value and accumulated amortization for each major class of intangible assets:



	At March 31, 2019					At September 30, 2018
	Gross Carrying Amount		Accumulated Amortization		Average Life (Years)	Gross Carrying Amount		Accumulated Amortization
Customer relationships & other	$	184,582	$	53,771	23	$	186,031	$	49,822
Technology and patents	19,321		6,789		13	19,004		6,238
Total amortizable intangible assets	203,903		60,560			205,035		56,060
Trademarks	221,397		—			221,883		—
Total intangible assets	$	425,300	$	60,560		$	426,918	$	56,060

Amortization expense for intangible assets was $2,512 and $1,783 for the quarters ended March 31, 2019 and 2018, respectively, and $4,930 and $4,039 for the six months ended March 31, 2019 and 2018. Amortization expense for the remainder of 2019 and the next five fiscal years and thereafter, based on current intangible balances and classifications, is estimated as follows: 2019 - $4,400; 2020 - $8,825; 2021 - $8,825; 2022 - $8,825; 2023 - $8,746; 2024 - $8,700; thereafter $95,022.

No event or indicator of impairment occurred during the six months ended March 31, 2019 which would require impairment testing of long-lived intangible assets including goodwill.