Furniture, Equipment And Leasehold Improvements (Furniture, Equipment and Leasehold Improvements) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Furniture and Office Equipment	$ 8,815	$ 7,137
Leasehold Improvements	28,837	19,890
Computer and Computer-related Equipment	9,744	7,900
Total	47,396	34,927
Less: Accumulated Depreciation and Amortization	(18,447)	(13,490)
Furniture, Equipment and Leasehold Improvements, Net	$ 28,949	$ 21,437

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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