PROPERTY AND EQUIPMENT, NET Property and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 71,778	$ 72,256
Less: acccumulated depreciation and amortization	52,868	52,206
Property and equipment, net	18,910	20,050
Property Plant and Equipment, Capital Expenditure Not Yet Placed in Service	1,009	778
Capital lease obligation, current	475	467
Capital lease obligation, non-current	202	324
Computer equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	10,501	10,889
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	7,761	7,840
Capitalized software costs
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	29,088	28,877
Leasehold and building improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 24,428	$ 24,650

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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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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- Definition

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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