The Company tested goodwill for impairment as of September 30, 2018 and concluded as of its testing date no impairment existed, as the Company’s market capitalization exceeded its net book value (i.e., shareholders’ equity). As of December 31, 2018, the Company’s net book value exceeded the Company’s market capitalization resulting in a “triggering event” that may indicate that goodwill was impaired. As a result, management re-tested goodwill for potential impairment as of December 31, 2018 and concluded that the positive qualitative factors such as the Company’s strong liquidity, capital, asset quality ratios, and earnings trends, outweighed the decline in the Company’s market capitalization and that goodwill was not impaired.

Other intangible assets include a core deposit intangible asset and mortgage servicing rights asset, both recorded as a result of the Merger.

The core deposit intangible asset is being amortized over the period of the expected benefit, which is 92 months from the date of the Merger, using the sum-of-the-months digits method.

The Company accounts for its mortgage servicing rights asset using the fair value measurement method per ASC 860-50, Transfers and Servicing, and as such, no amortization is recorded. Mortgage servicing rights assets are not amortized; rather, changes in the value of the mortgage servicing rights asset are recorded to earnings in the period in which the fair value changes occur. For the year ended December 31, 2018, the Company recorded $22 thousand of expense attributable to the fair value decline in the mortgage servicing rights assets, which is included in secondary market sales and servicing income in the consolidated statements of operations.

The following table presents information on the Company’s intangible assets, other than goodwill, as of the dates stated.

	Gross Carrying		Accumulated		Net Carrying
December 31, 2018	Value		Amortization		Value
Core deposit intangibles	$	3,670	$	1,477	$	2,193
Mortgage servicing rights		977		—		977
Total	$	4,647	$	1,477	$	3,170

	Gross Carrying		Accumulated		Net Carrying
December 31, 2017	Value		Amortization		Value
Core deposit intangibles	$	3,670	$	679	$	2,991
Mortgage servicing rights		999		—		999
Total	$	4,669	$	679	$	3,990

Amortization expense of the core deposit intangible asset for the years ended December 31, 2018 and 2017, totaled $798 thousand and $679, respectively. As of December 31, 2018, the estimated remaining amortization expense of the core deposit intangible asset is presented in the following table for the periods presented.


2019	$	674
2020		551
2021		427
2022		304
2023		180
Thereafter		57
Total estimated amortization expense	$	2,193