The carrying value of our goodwill was $324.9 million, or approximately 17% of our total assets, as of September 30, 2025. We test goodwill and intangible assets with an indefinite life for potential impairment annually, or more frequently if an event occurs or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value. These events or circumstances could include a significant change in the business climate, a change in strategic direction, legal factors, operating performance indicators, a change in the competitive environment, the sale or disposition of a significant portion of a reporting unit or future economic factors such as unfavorable changes in the estimated future discounted cash flows of our reporting units.
When performing our annual test of goodwill for impairment in the fourth quarter, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more-likely-than-not that the estimated fair value of a reporting unit is less than its carrying amount. If we elect to perform a qualitative assessment and determine an impairment is more-likely-than-not, we are then required to perform a quantitative impairment test; otherwise, no further analysis is required. We also may elect not to perform a qualitative assessment and, instead, proceed directly to a quantitative impairment test. When performing a quantitative impairment test, we apply a one-step quantitative test and record the amount of goodwill impairment as the excess of a reporting unit's carrying amount over its fair value, not to exceed the total amount of goodwill allocated to that reporting unit.
When we perform a quantitative goodwill impairment test, we estimate the fair value of the reporting unit using an income approach based on the present value of expected future cash flows, including terminal value, utilizing a market-based weighted average cost of capital ("WACC") determined separately for each reporting unit. The determination of fair value involves the use of estimates and assumptions, including revenue growth rates, operating margins and terminal growth rates discounted by an estimated WACC derived from other publicly traded companies that are similar but not identical to us from an operational and economic standpoint. We use discount rates that are commensurate with the risks and uncertainties inherent in the respective businesses and in our internally developed forecasts.
See Note 1: Organization and Summary of Significant Accounting Policies and Note 7: Goodwill and Intangible Assets of Notes to Consolidated Financial Statements included in "Part II, Item 8 - Financial Statements and Supplementary Data" for a discussion of our annual impairment tests performed for goodwill and indefinite-lived intangible assets.