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


	March 31, 2023					December 31, 2022
	Gross Carrying		Accumulated			Gross Carrying		Accumulated
	Amount		Amortization			Amount		Amortization

Finite-lived intangible assets
Patents	$	4,806	$	(4,806	)	$	4,806	$	(4,806	)
Land use rights		993		(286	)		1,175		(414	)
Trademark		1,966		(1,600	)		1,963		(1,576	)
Technology		7,070		(3,346	)		6,950		(3,189	)
Customer relationships		18,879		(9,767	)		18,637		(9,464	)
	$	33,714	$	(19,805	)	$	33,531	$	(19,449	)
Indefinite-lived intangible assets
Goodwill	$	28,687				$	28,004

The aggregate amortization expense for other intangibles with finite lives for the three months ended March 31, 2023 and 2022 was $0.6 million and $0.4 million, respectively. Amortization expense is estimated to be $1.4 million for the remainder of 2023, $1.7 million for 2024, $1.6 million for 2025, and $1.5 million for 2026 and 2027. The weighted-average remaining amortization period is approximately 11.8 years. The weighted-average remaining amortization period by intangible asset class; land use rights, 52.2 years; trademark, 12.8 years; technology, 7.9 years and customer relationships, 10.1 years.

The Company’s measurement date for its annual impairment test for goodwill is October 1st of each year. The Company performs additional interim impairment assessments as circumstances warrant. There were no indicators of impairment noted for the period ending March 31, 2023.

The Company may use both quantitative and qualitative approaches when testing goodwill for impairment. For selected reporting units where the qualitative approach is utilized, a qualitative evaluation of events and circumstances impacting the reporting unit is performed to determine if it is more likely than not that the fair value of the reporting unit exceeds its carrying amount. If that determination is made, no further evaluation is necessary. Otherwise, the Company performs a quantitative impairment test on the reporting unit.

For the quantitative approach, the Company uses a combination of the income approach, which uses a discounted cash flow methodology, and the market approach, which uses comparable market multiples 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. The fair value estimates are subjective and sensitive to significant assumptions, such as revenue growth rates, operating margins, the weighted average cost of capital, and estimated market multiples, of which are affected by expectations of future market or economic conditions. The Company believes that the methodologies, significant assumptions, and weightings used are reasonable and result in appropriate fair values of the reporting units.

The Company’s only intangible asset with an indefinite life is goodwill. The Company’s goodwill is not deductible for tax purposes. Changes in the carrying amount of goodwill by reporting unit are shown in the following table:


	PLP-USA		The Americas		EMEA		Asia-Pacific		Total

Balance at January 1, 2023	$	3,078	$	9,597	$	15,329	$	—	$	28,004
Purchase price measurement period adjustments		—		—		20		—		20
Currency translation		—		161		502		—		663
Balance at March 31, 2023	$	3,078	$	9,758	$	15,851	$	—	$	28,687

The purchase price measurement period adjustments relate to the finalization of the purchase price accounting of Holplast, s.r.o. acquired during 2022. See Note 14 for additional information about acquisitions of businesses.