This excerpt taken from the CBM 10-K filed Mar 15, 2007.
Impairment of Long-Lived Assets
The Company assesses the impairment of its long-lived assets, including amortizable intangible assets, and property, plant and equipment, whenever economic events or changes in circumstances indicate that the carrying amounts of the assets may not be recoverable. Long lived assets are considered to be impaired when the sum of the undiscounted expected future operating cash flows is less than the carrying amounts of the related assets. If impaired, the assets are written down to fair market value.