PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
PROPERTY AND EQUIPMENT
Property and equipment, gross	$ 30,006	$ 29,449
Less: accumulated depreciation and amortization	(24,173)	(23,294)
Total property and equipment, net	5,833	6,155
Computer equipment and capitalized software
PROPERTY AND EQUIPMENT
Property and equipment, gross	25,603	25,592
Leasehold improvements
PROPERTY AND EQUIPMENT
Property and equipment, gross	2,074	2,055
Furniture and other equipment
PROPERTY AND EQUIPMENT
Property and equipment, gross	1,303	1,302
Projects in progress
PROPERTY AND EQUIPMENT
Property and equipment, gross	$ 1,026	$ 500

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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