Property and Equipment Net (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Property, Plant and Equipment
Building	$ 39,273	$ 39,297
Furniture and fixtures	17,833	17,249
Machinery and equipment	9,545	9,163
Computer equipment	66,412	65,331
Computer software	53,829	51,541
Leasehold improvements	19,557	18,615
Land	16,317	16,317
Construction in progress-building	14,621	6,427
Property, Plant and Equipment, Gross, Total	237,387	223,940
Less accumulated depreciation and amortization	(135,553)	(129,338)
Property and equipment, net	$ 101,834	$ 94,602

The gross amount of computer equipment as of the balance sheet date.

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- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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The gross amount of capitalized computer software costs as of the balance sheet date.

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Gross amount, at the balance sheet date, of long-lived assets under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

+ References

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Gross amount, at the balance sheet date, of long-lived, depreciable assets commonly used in offices and stores. Examples include desks, chairs, and store fixtures.

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Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

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Gross amount, as of the balance sheet date, of long-lived, depreciable assets used in the production process to produce goods and services.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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