Property and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Summary of Property and equipment, net
Total property and equipment	$ 106,133	$ 105,947
Accumulated depreciation and amortization	(85,742)	(84,145)
Property and equipment, net	20,391	21,802
Buildings and leasehold improvements [Member]
Summary of Property and equipment, net
Total property and equipment	18,683	19,155
Furniture and fixtures [Member]
Summary of Property and equipment, net
Total property and equipment	24,512	23,858
Capitalized software [Member]
Summary of Property and equipment, net
Total property and equipment	44,597	44,035
Equipment [Member]
Summary of Property and equipment, net
Total property and equipment	$ 18,341	$ 18,899

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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