Other Financial Statement Data (Schedule Of Equipment And Leasehold Improvements) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	$ 12,338	$ 11,728
Accumulated depreciation and amortization	(10,619)	(10,328)
Equipment and leasehold improvements, net	1,719	1,400
Equipment [Member]
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	10,800	10,257
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Equipment and leasehold improvements, gross	$ 1,538	$ 1,471

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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