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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Depreciation and amortization over the estimated useful lives, using the straight-line method


Computer equipment and related software		2-7 years
Buildings		25-32 years
Leasehold and building improvements		Shorter of the lease term or the estimated useful life
Furniture and fixtures		3-5 years
Equipment		3-5 years

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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