Balance Sheet Details Property Plant & Equipment (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Property Plant & Equipment [Abstract]
Buildings and Land Gross	$ 4,997	$ 4,997
Machinery and Equipment, Gross	16,897	17,514
Furniture and Fixtures, Gross	3,381	3,384
Computer Equipments And Software Gross	6,502	6,350
Leasehold Improvements, Gross	6,306	6,329
Property, Plant and Equipment, Gross	38,083	38,574
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(27,006)	(26,044)
Total property, plant and equipment	$ 11,077	$ 12,530

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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