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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

7. Goodwill and Intangible Assets

The changes in the carrying amount of goodwill for the nine months ended September 30, 2020 were as follows (in thousands):


			Software and
	TASER		Sensors		Total
Balance, beginning of period	$	1,354	$	23,659	$	25,013
Foreign currency translation adjustments		—		(1)		(1)
Balance, end of period	$	1,354	$	23,658	$	25,012

Intangible assets (other than goodwill) consisted of the following (in thousands):


		September 30, 2020						December 31, 2019
		Gross				Net		Gross				Net
	Useful	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Life	Amount		Amortization		Amount		Amount		Amortization		Amount
Amortizable (definite-lived) intangible assets:
Domain names	5‑10 years	$	3,161	$	(1,263)	$	1,898	$	3,161	$	(1,035)	$	2,126
Issued patents	5‑25 years		3,216		(1,510)		1,706		3,271		(1,339)		1,932
Issued trademarks	3‑15 years		1,200		(573)		627		1,166		(678)		488
Customer relationships	4‑8 years		3,712		(1,784)		1,928		3,721		(1,416)		2,305
Non-compete agreements	3‑4 years		452		(419)		33		450		(404)		46
Developed technology	3‑5 years		10,660		(8,167)		2,493		10,660		(6,528)		4,132
Re-acquired distribution rights	2 years		2,042		(2,042)		—		2,009		(2,009)		—
Total amortizable			24,443		(15,758)		8,685		24,438		(13,409)		11,029
Non-amortizable (indefinite-lived) intangible assets:
TASER trademark			900				900		900				900
Patents and trademarks pending			675				675		842				842
Total non-amortizable			1,575				1,575		1,742				1,742
Total intangible assets		$	26,018	$	(15,758)	$	10,260	$	26,180	$	(13,409)	$	12,771

Amortization expense of intangible assets for the three and nine months ended September 30, 2020 was $0.8 million and $2.5 million, respectively. Amortization expense of intangible assets for the three and nine months ended September 30, 2019 was $0.8 million and $2.7 million, respectively. Estimated amortization for intangible assets with definite lives for the remaining three months of 2020, the next five years ended December 31, and thereafter, is as follows (in thousands):


2020 remaining	$	831
2021		2,879
2022		1,277
2023		982
2024		899
2025		632
Thereafter		1,185
Total	$	8,685