Goodwill and Other Intangible Assets

Goodwill

The following table summarizes the Company's goodwill:



	Total			Specialty Solutions			Performance Materials
	(Dollars in millions)
Balance November 30, 2016	$	80.2		$	60.6		$	19.6
Acquisitions	1.6			1.6			—
Impairment	(19.6		)	—			(19.6		)
Currency translation adjustment	4.1			4.1			—
Balance November 30, 2017	66.3			66.3			—
Acquisitions	6.4			6.4			—
Currency translation adjustment	(1.8		)	(1.8		)	—
Balance November 30, 2018	$	70.9		$	70.9		$	—

Intangible Assets

The following table summarizes the Company’s intangible assets:



	November 30, 2018				November 30, 2017				November 30, 2018
	Gross Carrying Amount		Accumulated Amortization / Impairment		Gross Carrying Amount		Accumulated Amortization / Impairment		Weighted Average Remaining Life
	(Dollars in millions)
Finite-lived intangible assets:
Patents	$	20.2	$	19.1	$	20.7	$	19.0	2.3
Trademarks	9.4		7.3		7.9		7.2		8.2
Technical know-how	6.9		4.7		6.0		4.6		9.4
Customer lists	34.6		20.7		34.4		18.5		3.5
Land use rights	5.8		0.8		6.1		0.7		50.0
Other	2.1		2.1		2.1		1.9		0.0
Sub-total	$	79.0	$	54.7	$	77.2	$	51.9	13.9
Indefinite lived intangible assets:
Trademarks	30.7		1.5		30.7		—		N/A
Total	$	109.7	$	56.2	$	107.9	$	51.9

Amortization expense for finite-lived intangible assets was $3.8 million, $3.5 million, and $3.8 million for the years ended November 30, 2018, 2017, and 2016, respectively. The Company impaired a trademark during 2018, and recognized impairment expense of $1.5 million within the results of the Performance Materials segment. Reductions in forecasted revenues or royalty rates could result in additional trademark impairments.

The following table summarizes expected future annual amortization expense for the Company’s finite-lived intangible assets:



Year Ending November 30:	(Dollars in millions)
2019	$	5.1
2020	5.1
2021	4.6
2022	1.5
2023	0.8
Thereafter	7.2
Total	$	24.3