GOODWILL AND OTHER INTANGIBLE ASSETS

6 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill activity for each of the Company’s reportable segments, which carry goodwill, Electronic Materials and Performance Materials, for the six months ended March 31, 2020.


	Electronic Materials		Performance Materials		Total
Balance at September 30, 2019	$	352,797	$	357,274	$	710,071

Foreign currency translation impact	465		(1,918)		(1,453)
Other	—		1,205		1,205

Balance at March 31, 2020	$	353,262	$	356,561	$	709,823

The components of other intangible assets are:


	March 31, 2020						September 30, 2019
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Other intangible assets subject to amortization:
Product technology, trade secrets and know-how	$	121,579	$	42,230	$	123,948	$	37,993
Acquired patents and licenses	9,023		8,558		9,023		8,397
Customer relationships, trade names, and distribution rights	685,061		103,386		684,764		64,471

Total other intangible assets subject to amortization	815,663		154,174		817,735		110,861

Other intangible assets not subject to amortization:
Other indefinite-lived intangibles*	47,170				47,170
Total other intangible assets not subject to amortization	47,170				47,170

Total other intangible assets	$	862,833	$	154,174	$	864,905	$	110,861

*Other indefinite-lived intangible assets not subject to amortization consist primarily of trade names.

Amortization expense was $22,014 and $43,378 for the three and six months ended March 31, 2020, respectively, and was $16,960 and $26,318 for the three and six months ended March 31, 2019, respectively. Estimated future amortization expense for the five succeeding fiscal years is as follows:


Fiscal Year	Estimated Amortization Expense
Remainder of 2020	$	42,429
2021	90,474
2022	80,974
2023	68,480
2024	60,528

Goodwill and indefinite-lived intangible assets are tested for impairment annually in the fourth quarter of our fiscal year or more frequently if indicators of potential impairment exist, using a fair-value-based approach. The recoverability of goodwill is measured at the reporting unit level, which is defined as either an operating segment or one level below an operating segment. An entity has the option to assess the fair value of a reporting unit either using a qualitative analysis ("step zero") or a quantitative analysis ("step one"). Similarly, an entity has the option to use a step zero or a step one approach to determine the recoverability of indefinite-lived intangible assets. In fiscal year 2019, we chose to use a step one analysis for both goodwill impairment and for indefinite-lived intangible asset impairment, with the exception of our CMP slurries and QED reporting units, for which we chose to use a step zero analysis for fiscal year 2019.

We continue to actively monitor the industries in which we operate and our businesses' performance for indicators of potential impairment. As of March 31, 2020, we have determined that a triggering event had not occurred that would require an interim impairment test to be performed. If current global macroeconomic conditions related to the COVID 19 pandemic ("Pandemic") persist and adversely impact our Company, we may have future impairments of goodwill of the underlying businesses. Potential future impairments could be material to the Company’s Consolidated Balance Sheets and to the Consolidated Statements of Income, but they will not affect the Company’s reported Net cash provided by operating activities.