This excerpt taken from the IXYS 10-K filed Jul 29, 2005.
Goodwill. We regularly evaluate whether events and circumstances have occurred that indicate a possible impairment of goodwill. In determining whether there is an impairment of goodwill, we calculate the estimated fair value of our company based on the closing sales price of our common stock and projected discounted cash flows as of the date we perform the impairment tests. We allocate a portion of the total fair value to different reporting units based on discounted cash flows. We then compare the resulting fair values of our reporting units to their respective net book values, including goodwill. If the net book value of our company exceeds its fair value, we measure the amount of the impairment loss by comparing the implied fair value of our goodwill with the carrying amount of that goodwill. To the extent that the carrying amount of a reporting units goodwill exceeds its implied fair value, we recognized a goodwill impairment loss. We perform this impairment test annually and whenever facts and circumstances indicate that there is a possible impairment of goodwill. We completed the required annual impairment test, which resulted in no impairment for fiscal year 2004. We believe the methodology we use in testing impairment of goodwill provides us with a reasonable basis in determining whether an impairment charge should be taken. To date, our goodwill has not been considered to be impaired based on the results of this first step.