8. Other Intangible Assets

The following table summarizes the components of gross and net acquired intangible assets:

Other intangible assets acquired include contract-based and technology-based intangible assets.

The Company evaluates long-lived assets, including amortizable and indefinite-lived intangible assets, for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable. The Company evaluates indefinite-lived intangible assets on an annual basis. In fiscal 2011, the Company tested its indefinite-lived intangible assets and no impairment was indicated. Other factors indicating the carrying value of the Company's amortizable intangible assets may not be recoverable were not present in fiscal 2011, and accordingly, no impairment testing was performed on these assets. In fiscal 2010, the Company recognized a non-cash $12.0 million impairment charge to its indefinite-lived intangible assets as a result of the continuing challenging economic environment.

In fiscal 2010, factors were present indicating the carrying value of certain amortizable intangible assets may not be recoverable, which prompted the Company to perform impairment testing on these assets. The carrying values of the assets were determined to be recoverable, and accordingly, no impairment charges were recognized during fiscal 2010.

The Company is currently amortizing its acquired intangible assets with definite lives over periods ranging from 1 to 25 years; over weighted average remaining lives of eight years for marketing-related intangibles, 18 years for customer-related intangibles and six years for other acquired intangibles. Amortization expense for intangibles subject to amortization was approximately $5.0 million, $4.6 million and $4.0 million, for fiscal 2011, 2010 and 2009, respectively, and is classified within operating expenses in the condensed consolidated statements of operations. Estimated annual amortization expense related to acquired intangible assets in each of the succeeding five years is estimated to be approximately $5 million per year from fiscal 2012 through fiscal 2016.