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Composition Of Certain Financial Statement Captions (Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Items Included in Consolidated Statement of Financial Condition [Abstract]
Buildings	$ 137,940		$ 137,751
Equipment	65,996		66,167
Land	9,929		9,929
Purchased software	92,362		91,468
Furniture and fixtures	17,524		18,535
Leasehold improvements	4,495		5,037
Construction in progress	116		112
Property and Equipment, gross	328,362		328,999
Less: Accumulated depreciation	(205,209)		(201,418)
Property and Equipment, net	123,153		127,581
Depreciation expense	$ 5,704	$ 5,432

X

- 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.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

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