Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

7. Goodwill and Intangible Assets

Goodwill and intangible assets with indefinite lives was $147.4 and $146.9 million as of December 31, 2020 and December 31, 2019. Intangible assets that are subject to amortization, including the related accumulated amortization, are comprised of the following:

	December 31, 2020							December 31, 2019
	Cost		Accumulated amortization			Net carrying amount		Cost		Accumulated amortization			Net carrying amount
	(In thousands)
Technology	$	5,770	$	(5,770	)	$	—	$	5,770	$	(5,770	)	$	—
Customer relationships		102,696		(7,369	)		95,327		64,332		(3,451	)		60,881
Non-competition agreements		380		(380	)		—		380		(380	)		—
Tradenames and patents		400		(373	)		27		490		(385	)		105
Total	$	109,246	$	(13,892	)	$	95,354	$	70,972	$	(9,986	)	$	60,986

Amortization expense associated with identifiable intangible assets was $3.9 million, $0.8 million and $0.4 million for the years ended December 31, 2020, 2019 and 2018, respectively. Annual estimated total amortization expense is $5.7 million, $6.9 million, $7.9 million, $6.7 million and $5.7 million for 2021 through 2025.