Gross amount, at the balance sheet date, of long-lived, depreciable assets including computers, hardware and software that are commonly used in an office setting.

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Gross amount, at the balance sheet date, of long-lived, depreciable assets commonly used in an office setting.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Gross amount, at the balance sheet date, of long-lived, depreciable assets commonly used in offices and stores. Examples include desks, chairs, and store fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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-Paragraph 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

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Gross amount, at the balance sheet date, of long-lived, depreciable assets that are an addition or improvement to assets held under lease arrangement.

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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The average useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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The minimum useful life of long lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Property And Equipment (Schedule Of Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Computer Equipment [Member] years	Sep. 30, 2011 Office Equipment [Member] years	Sep. 30, 2011 Furniture And Fixtures [Member] years	Sep. 30, 2011 Leasehold Improvements [Member] years
Property, Plant and Equipment [Line Items]
Computer equipment	$ 39,483	$ 32,525
Office equipment	4,396	3,784
Furniture and fixtures	3,535	3,378
Leasehold improvements	3,745	3,361
Total property and equipment, gross	51,159	43,048
Less: Accumulated depreciation	(30,379)	(24,173)
Total property and equipment, net	$ 20,780	$ 18,875
Estimated Useful Life (in Years), minimum			3			3
Estimated Useful Life (in Years), maximum			5			13
Estimated Useful Life (in Years)				5	5