Intangible assets are recorded at cost less accumulated amortization and impairment losses. Intangible assets acquired in a business combination are measured at fair value at the acquisition date. Amortization of definite life intangibles is recognized on a straight-line basis over their estimated useful lives. The estimated useful lives, residual values, and amortization methods are reviewed at each year end, and any changes in estimates are accounted for prospectively.

	Licenses		Customer Relationships			Non- Competition Agreements			Trademarks			Know- How			Total
Balance, December 31, 2019	$	20,146	$	2,247		$	137		$	3,725		$	8,892		$	35,147
Amortization expense		—		(579	)		(94	)		(377	)		(1,959	)		(3,009	)
Impairment		—		—			—			(3,348	)		—			(3,348	)
Balance, December 31, 2020	$	20,146	$	1,668		$	43		$	—		$	6,933		$	28,790
Amortization expense		—		(435	)		(37	)		—			(1,435	)		(1,907	)
Balance, September 30, 2021	$	20,146	$	1,233		$	6		$	—		$	5,498		$	26,883

On an annual basis, the Company assesses the Company’s reporting unit’s (“RUs”) for indicators of impairment or when facts or circumstances suggest that it is more likely than not that the carrying amount may exceed fair value. For the purpose of impairment testing, goodwill is allocated to the Company’s RUs to which it relates.

Goodwill was not tested for impairment during the nine months ended September 30, 2021.

Management identified negative trigger events regarding its online CBD business. Management has concluded that the overall financial performance of Pure Ratio continued to be worse than expectations, including revenue growth, EBITDA/cash flows, and future growth projections. The Pure Ratio’s business operates at a breakeven (i.e., zero) profit level and is not expected to improve in the near term. As such, management had determined that the goodwill and remaining intangible assets associated with the Pure Ratio’s RU are impaired. As such, the remaining goodwill of $13,400 and $3,348 in trademarks were written off as of December 31, 2020.