Balance Sheet Components

9 Months Ended

Sep. 30, 2021

Balance Sheet Related Disclosures [Abstract]

3. Balance Sheet Components

Inventory

Inventory consisted of the following (in thousands):


	September 30, 2021		December 31, 2020
Raw materials	$	4,663	$	2,114
Work in process		351		308
Finished goods		2,222		1,916
Total	$	7,236	$	4,338

The Company recorded a reserve for excess and obsolete inventory of $1.1 million and $1.3 million at September 30, 2021 and December 31, 2020, respectively.

Intangible assets, net

Intangible assets, net were comprised of the following at September 30, 2021 and December 31, 2020 (in thousands):


	Gross		Accumulated Amortization		Net
Developed Technology (5-10 years)	$	2,445	$	679	$	1,766
Customer relationships (7 years)		1,910		807		1,103
Tradenames (10 years)		360		107		253
September 30, 2021	$	4,715	$	1,593	$	3,122


	Gross		Accumulated Amortization		Net
Developed Technology (5 years)	$	1,110	$	490	$	620
Customer relationships (7 years)		1,910		603		1,307
Tradenames (10 years)		360		79		281
December 31, 2020	$	3,380	$	1,172	$	2,208

For the three months ended September 30, 2021 and 2020, amortization expense related to the above finite-lived intangible assets was $0.1 million recorded in cost of sales and $0.1 million recorded in selling, general and administrative expenses in the unaudited condensed consolidated statements of operations and comprehensive loss.

For the nine months ended September 30, 2021 and 2020, amortization expense related to the above finite-lived intangible assets was $0.2 million recorded in cost of sales and $0.2 million recorded in selling, general and administrative expenses in the unaudited condensed consolidated statements of operations and comprehensive loss.

Estimated future annual amortization expense related to intangible assets, net at September 30, 2021 was as follows (in thousands):


2021 (remaining three months)	$	166
2022		664
2023		618
2024		442
2025		386
Thereafter		846
Total amortizable intangible assets	$	3,122

The weighted average amortization period as of September 30, 2021 of the Company’s intangible assets is 7.6 years.