Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Note 7. Intangible Assets

The components of intangible assets were as follows:

	As of December 31, 2021							As of December 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Finite-lived intangible assets:
Customer relationships ^1,2	$	4,292	$	(1,685	)	$	2,607	$	4,292	$	(1,326	)	$	2,966
Acquired technology ^1,3		11,500		(3,275	)		8,225		11,500		(2,508	)		8,992
Acquired trademarks ¹		570		(532	)		38		570		(418	)		152
	$	16,362	$	(5,492	)	$	10,870	$	16,362	$	(4,252	)	$	12,110

Certain intangible assets were established upon PDL’s acquisition of LENSAR in May 2017. They are being amortized on a straight-line basis over a period of 15 years. The intangible assets for customer relationships are amortized on a straight-line basis or a double declining basis over their estimated useful lives up to 20 years based on the method that better represents the economic benefits to be obtained.

²	LENSAR acquired certain intangible assets for customer relationships from a domestic distributor in an asset acquisition, which are being amortized on a straight-line basis over a period of 10 years.

³	LENSAR acquired certain intangible assets from a medical technology company in an asset acquisition, which are being amortized on a straight-line basis over a period of 15 years.

Amortization expense for the years ended December 31, 2021 and 2020 was $1,240 and $1,256, respectively.

Based on the intangible assets recorded at December 31, 2021, and assuming no subsequent additions to or impairment of the underlying assets, the remaining amortization expense is expected to be as follows:

Fiscal Year	Amount
2022	$	1,149
2023		1,097
2024		1,085
2025		1,074
2026		1,064
Thereafter		5,401
Total remaining estimated amortization expense	$	10,870