Goodwill

6 Months Ended

Jun. 30, 2011

Goodwill

Goodwill

8. Goodwill

        At least annually, and more frequently if warranted, the Company assesses whether the goodwill has been impaired by comparing the estimated fair value of each reporting unit with its estimated net book value. Periodically estimating the fair value of a reporting unit requires significant judgment and often involves the use of significant estimates and assumptions. These estimates and assumptions could have a significant effect on whether or not an impairment charge is recorded and the magnitude of such a charge. There were no additions or impairment losses to goodwill during the three months and six months ended June 30, 2011.