Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 24,219	$ 24,020
Equipment and furniture	20,234	19,876
Construction in progress	19,692
Property, Plant and Equipment, Gross, Total	64,145	43,896
Less accumulated depreciation and amortization	(36,936)	(36,215)
Property and equipment, net	$ 27,209	$ 7,681

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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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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- Definition

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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