text: **Impairment of Long-lived Assets**
  We evaluate our property and equipment and other long-lived assets for impairment 
  in accordance with Statement of Financial Accounting Standards No. 144, 
  “Accounting for the Impairment or Disposal of Long-Lived Assets.” For assets to be 
  disposed of, we recognize the asset at the lower of carrying value or fair market value 
  less costs of disposal, as estimated based on comparable asset sales, solicited offers, or a 
  discounted cash flow model. For assets to be held and used, we review for impairment 
  whenever indicators of impairment exist. We then compare the estimated future cash 
  flows of the asset, on an undiscounted basis, to the carrying value of the asset. If the 
  undiscounted cash flows exceed the carrying value, no impairment is indicated. If the 
  undiscounted cash flows do not exceed the carrying value, then an impairment is 
  recorded based on the fair value of the asset, typically measured using a discounted 
  cash flow model. If an asset is still under development, future cash flows include 
  remaining construction costs. All recognized impairment losses, whether for assets to 
  be disposed of or assets to be held and used, are recorded as operating expenses. 