The Company’s finite and indefinite-lived intangible assets consist of the following:

	September 30, 2019					December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets
Patents	$	4,806	$	(4,806	)	$	4,806	$	(4,788	)
Land use rights		1,124		(258	)		1,134		(203	)
Trademarks		1,672		(1,294	)		1,707		(1,247	)
Technology		6,767		(1,539	)		2,994		(1,334	)
Customer relationships		15,672		(6,928	)		11,804		(6,415	)
	$	30,041	$	(14,825	)	$	22,445	$	(13,987	)
Indefinite-lived intangible assets
Goodwill	$	25,278				$	15,621

At September 30, 2019, the Company’s total net Finite-lived intangible assets includes $3.9 million of Customer relationships and $3.7 million of Technology attributable to its newly acquired businesses. Refer to Note S, “Business Combinations” for further information regarding additions.

The aggregate amortization expense for other intangibles with finite lives for the three and nine months ended September 30, 2019 was $.5 million and $1.1 million, respectively. The aggregate amortization expense for other intangibles with finite lives for the three and nine months ended September 30, 2018 was $.3 million and $.8 million, respectively. Amortization expense is estimated to be $1.1 million for the remaining period of 2019, $1.5 million for 2020 and $1.4 million for 2021, 2022 and 2023. The weighted-average remaining amortization period is approximately 14.8 years. The weighted-average remaining amortization period by intangible asset class is as follows: patents, 6.3 years; land use rights, 56.0 years; trademarks, 7.8; technology, 13.7 years; and customer relationships, 12.3 years.

The Company’s measurement date for its annual impairment test for goodwill is October 1st of each year. The Company performs its annual impairment test for goodwill utilizing a discounted cash flow methodology, market comparables, and an overall market capitalization reasonableness test in computing fair value by reporting unit. The Company then compares the fair value of the reporting unit with its carrying value to assess if goodwill has been impaired. Based on the assumptions as to growth, discount rates and the weighting used for each respective valuation methodology, results of the valuations could be significantly different. However, the Company believes that the methodologies and weightings used are reasonable and result in appropriate fair values of the reporting units. The Company’s valuation method uses Level 3 inputs under the fair value hierarchy.

The Company’s only intangible asset with an indefinite life is goodwill. The changes in the carrying amount of goodwill, by segment, for the nine months ended September 30, 2019 are as follows:

	USA		The Americas		EMEA			Asia-Pacific			Total
Balance at January 1, 2019	$	3,078	$	3,997	$	1,355		$	7,191		$	15,621
Currency translation				101		(451	)		(403	)		(753	)
Additions						10,410						10,410
Balance at September 30, 2019	$	3,078	$	4,098	$	11,314		$	6,788		$	25,278

The Company’s total Indefinite-lived intangible assets includes $10.4 million attributable to its newly acquired businesses. Refer to Note S, “Business Combinations” for further information regarding additions.