Intangible Assets

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

8. Intangible Assets

Intangible assets, the majority of which were acquired in the acquisition of TIW and OilPatch Technologies (OPT), consist of the following:

	Estimated Useful Lives	2022
		Gross Book Value		Accumulated Amortization			Foreign Currency Translation			Net Book Value
		(In thousands)
Trademarks	15 years	$	8,233	$	(2,118	)	$	(79	)	$	6,036
Patents	15 - 30 years		6,055		(3,699	)		-			2,356
Customer relationships	5 - 15 years		26,028		(10,878	)		(234	)		14,916
Organizational Costs	3 years		183		(131	)		(12	)		40
		$	40,499	$	(16,826	)	$	(325	)	$	23,348

	Estimated Useful Lives	2021
		Gross Book Value		Accumulated Amortization			Foreign Currency Translation			Net Book Value
		(In thousands)
Trademarks	15 years	$	8,257	$	(1,579	)	$	(23	)	$	6,655
Patents	15 - 30 years		6,058		(3,285	)		(1	)		2,772
Customer relationships	5 - 15 years		26,078		(9,128	)		(38	)		16,912
Organizational costs	3 years		185		(76	)		(2	)		107
		$	40,578	$	(14,068	)	$	(64	)	$	26,446

Amortization expense was $2.8 million, $3.0 million, $3.0 million, respectively for each of the years 2022, 2021 and 2020. Based on the carrying value of intangible assets at December 31, 2022, amortization expense for the subsequent five years is estimated to be as follows: 2023 — $2.8 million; 2024 — $2.7 million; 2025 — $2.7 million; 2026 — $2.7 million; and 2027 — $2.5 million.