Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

The components of intangible assets were as follows:

	As of December 31, 2020							As of December 31, 2019
	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	$	(1,326	)	$	2,966	$	4,292	$	(951	)	$	3,341
Acquired technology ^1,3		11,500		(2,508	)		8,992		11,500		(1,741	)		9,759
Acquired trademarks ¹		570		(418	)		152		570		(304	)		266
	$	16,362	$	(4,252	)	$	12,110	$	16,362	$	(2,996	)	$	13,366

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 weighted-average 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.

Schedule of Impairment of Underlying Assets, Remaining Amortization Expense

Based on the intangible assets recorded at December 31, 2020, 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
2021	$	1,240
2022		1,149
2023		1,097
2024		1,085
2025		1,074
Thereafter		6,465
Total remaining estimated amortization expense	$	12,110