Intangible assets deemed to have an indefinite life are not amortized but are instead reviewed annually for impairment of value or when indicators of a potential impairment are present. The Company performs its annual impairment testing as of October 1 and monitors for interim triggering events on an ongoing basis as events occur or circumstances change. The Company

estimated the fair value of

the indefinite life intangibles

for all the reporting units

utilizing  relief from royalty

approach and the significant assumption used to measure fair value include discount rate, terminal factors and royalty rate

. Based on the analysis, the Company recognized an intangible asset impairment of

million in the fourth quarter of 2021. The impairment was recognized in Impairment of Goodwill and Intangible Assets on the Consolidated Statement of Operations. The impairment of intangible assets for each reporting unit is as follows: $66.6 million at the Mortgage Origination reporting unit, $2.7 million at the Reverse Origination reporting unit, $8.0 million at the Lender Services reporting unit, and $9.1 million at the Portfolio Management reporting unit.