Goodwill — Goodwill represents the excess of the purchase price over the identifiable tangible and intangible assets acquired plus liabilities assumed arising from business combinations. The balance of goodwill was $1.9 million as of June 30, 2024 and December 31, 2023 as a result of the Company's acquisition of V-Go in May 2022. Goodwill is tested at least annually for impairment by assessing qualitative factors in determining whether it is more likely than not that the fair value of net assets is below their carrying amounts. See Note 1 – Description of Business and Significant Accounting Policies.

Other Intangible Asset — Other intangible asset consisted of the following (dollars in thousands):


	Estimated		June 30, 2024							December 31, 2023
	Useful Life (Years)		Cost		Accumulated Amortization			Net Book Value		Cost		Accumulated Amortization			Net Book Value
Developed technology		15	$	1,200	$	(167	)	$	1,033	$	1,200	$	(127	)	$	1,073

Amortization expense related to the other intangible asset was de minimis for the three and six months ended June 30, 2024 and 2023.

The estimated annual amortization expense for the other intangible asset for the years ended December 31, 2024 through 2028 will be approximately $0.1 million per year and $0.6 million, thereafter.

The Company evaluates its other intangible asset for potential impairment when events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. See Note 1 – Description of Business and Significant Accounting Policies.