Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Components of intangible assets

Amortizing intangible assets consist of the following at December 31:

	December 31, 2021
	Cost		Accumulated Amortization		Net
Raw material supply agreement	$	6,230	$	(4,296)	$	1,934
RD technology	8,300		(4,196)		4,104
Acquired customer relationships	44,947		(2,510)		42,437
Trade names	4,700		—		4,700
Other intangible assets	200		(200)		—
Total intangible assets	$	64,377	$	(11,202)	$	53,175

	December 31, 2020
	Cost		Accumulated Amortization		Net
Raw material supply agreement	$	6,230	$	(3,618)	$	2,612
RD technology	8,300		(3,643)		4,657
Acquired customer relationships	4,747		(2,025)		2,722
Other intangible assets	904		(187)		717
Total intangible assets	$	20,181	$	(9,473)	$	10,708

Estimated amortization expense

Estimated amortization expense for fiscal years ended December 31 is as follows:

2022	$	5,239
2023	5,249
2024	5,260
2025	4,988
2026	4,301
Thereafter	28,138
Total	$	53,175