The Company reviews long-lived assets for impairment indicators on a quarterly basis or whenever events or changes in circumstances indicate the carrying amount of the assets may not be fully recoverable. See discussion of the Company’s long-lived asset impairment evaluation process in Note 1 to the Company’s financial statements as included in its 2017 Annual Report on Form 10-K.  As noted in the discussion, fair value is determined based on a multiple of cash flows, which was six and a half times for the evaluations performed during the nine months ended September 30, 2018 and 2017. As of September 30, 2018, the estimated aggregate fair value of the long-lived assets impaired during the nine months ended September 30, 2018 was $178.

The long-lived asset impairment charges recorded during each of the periods presented are specific to theatres that were directly and individually impacted by increased competition, adverse changes in market demographics or adverse changes in the development or the conditions of the areas surrounding the theatre.

Below is a summary of impairment charges for the periods presented: