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

	June 30, 2020					December 31, 2019
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Finite-lived intangible assets
Patents	$	4,806	$	(4,806	)	$	4,806	$	(4,806	)
Land use rights		1,078		(433	)		1,128		(331	)
Trademarks		1,653		(1,366	)		1,718		(1,358	)
Technology		6,994		(1,954	)		7,185		(1,708	)
Customer relationships		15,462		(7,648	)		15,811		(7,329	)
	$	29,993	$	(16,207	)	$	30,648	$	(15,532	)
Indefinite-lived intangible assets
Goodwill	$	27,048				$	27,840

The aggregate amortization expense for other intangibles with finite lives for the three and six-month periods ended June 30, 2020 was $.4 million and $.9 million, respectively. The aggregate amortization expense for other intangibles with finite lives for the three and six-month periods ended June 30, 2019 was $.3 million and $.6 million, respectively. Amortization expense is estimated to be $.8 million for the remaining period of 2020 and $1.5 million for each of the years 2021, 2022 and 2023 and 2024. The combined weighted-average remaining amortization period is approximately 12.8 years. The weighted-average remaining amortization period by intangible asset class is as follows: patents, 5.5 years; land use rights, 55.3 years; trademarks, 8.5 years; technology, 10.6 years; and customer relationships, 9.9 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 to 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 three months ended June 30, 2020 are as follows:

	USA		The Americas			EMEA			Asia-Pacific			Total
Balance at January 1, 2020	$	3,078	$	4,158		$	13,442		$	7,162		$	27,840
Currency translation		0		(188	)		(355	)		(249	)		(792	)
Balance at June 30, 2020	$	3,078	$	3,970		$	13,087		$	6,913		$	27,048