Property and Equipment (Schedule) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 119,130	$ 96,103
Accumulated depreciation	(61,739)	(50,128)
Property and equipment, net	57,391	45,975
Land and Building
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	6,108	5,972
Computer Hardware
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	28,534	23,565
Computer Software
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	76,215	59,039
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	1,826	1,592
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 6,447	$ 5,935

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, 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.

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- Definition

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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