GOODWILL AND OTHER INTANGIBLE ASSETS:

Goodwill is not amortized, but is evaluated for impairment annually during the fourth quarter, or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of its carrying value. The Company may first consider qualitative factors to assess whether there are indicators that it is more likely than not that the fair value of a reporting unit may not exceed its carrying amount. To the extent that such indicators exist, a goodwill impairment test is completed. If the carrying value of the goodwill of a reporting unit exceeds its implied fair value, the difference is recognized as an impairment charge. The Company uses a combination of an income and market approach to estimate the fair value of a reporting unit.

As a result of the Midstream Acquisition, CNX recorded $796,359 of goodwill and $128,781 of other intangible assets in conjunction with the preliminary purchase accounting. In May 2018 the Company recognized an impairment on this intangible asset of $18,650 in connection with the AEA with HG Energy (See Note 6 - Acquisitions and Dispositions for more information).

All goodwill is attributed to the Midstream reportable segment. Changes in the carrying amount of goodwill consist of the following activity:



December 31, 2017	$	—
Acquisitions	796,359
September 30, 2018	$	796,359

The carrying amount and accumulated amortization of other intangible assets consist of the following:



	September 30, 2018
Other Intangible Assets
Customer Relationships	$	128,781
Less: Impairment of Other Intangible Assets	(18,650		)
Less: Accumulated Amortization for Customer Relationships	(5,293		)
Total Other Intangible Assets, net	$	104,838

Amortization expense for other intangible assets was $1,638 and $5,293 for the three and nine months ended September 30, 2018 respectively. There was no amortization expense for the three and nine months ended September 30, 2017.

The customer relationships intangible asset category will be amortized on a straight-line basis over approximately 17 years. The estimated future annual amortization expense for the next five fiscal years for other intangible assets recorded at September 30, 2018 is as follows:



	2019		2020		2021		2022		2023
Estimated Annual Amortization Expense	$	6,552	$	6,552	$	6,552	$	6,552	$	6,552