Intangible Asset Impairment

Limited-life intangibles are amortized throughout the useful life of the intangible asset using either the units of activity or the straight-line method.

Because Indefinite-life tangibles continue to generate cash they can't be amortized; they must be evaluated for impairment yearly.

Goodwill is an intangible asset that is tested yearly for impairment; it is not amortized.