The Company tests goodwill during the fourth quarter of each year or more often if events or circumstances indicate there may be impairment. The Company performs its analysis for each reporting unit that constitutes a business for which discrete financial information is produced and reviewed by operating segment management and provides services that are distinct from the other components of the operating segment, in accordance with the provisions of FASB ASC Topic 350, Intangibles—Goodwill and Other (ASC 350). This guidance provides the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, based on a review of qualitative factors, it is more likely than not that the fair value of a reporting unit is less than its carrying value, the Company performs a goodwill impairment test by comparing the carrying value of each reporting unit to its respective fair value. The Company determines the estimated fair value of each reporting unit using a discounted cash flow analysis. The fair value of the reporting unit is the implied fair value of goodwill. In the event a reporting unit's carrying value exceeds its fair value, an impairment loss will be recognized. An impairment loss is measured by the difference between the carrying value of the reporting unit and its fair value.

The Company performs its goodwill impairment test annually and evaluates goodwill when events or changes in circumstances indicate that its carrying value may not be recoverable. The Company performs the annual impairment testing of goodwill using October 1 as the measurement date. The Company completed its goodwill impairment test as of October 1, 2022 and did not record any impairment charge to goodwill or other intangible assets for the fiscal years 2022, 2021 or 2020. The Company has recognized cumulative goodwill impairment losses of $7,410.

All of the Company's acquisitions during the year ended December 31, 2020 were classified as asset acquisitions and accordingly, no goodwill was recognized for these acquisitions. There were no other activities in goodwill during the year ended December 31, 2020. Provided that goodwill corresponds to the acquisition of a business and not merely the acquisition of real estate property, the Company's Standard Bearer segment appropriately does not carry a goodwill balance. The following table represents activity in goodwill by skilled service segment and "all other" category as of and for the year ended December 31, 2022, 2021 and 2020: