This excerpt taken from the AMCS 10-K filed Mar 11, 2010.
Items Measured at Fair Value on a Nonrecurring Basis
Certain assets, including our goodwill, are measured at fair value on a nonrecurring basis. These assets are recognized at fair value when they are deemed to be impaired. We did not record any impairment charges for these assets during the year ended December 31, 2009.