v2.4.0.6

Organization And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Organization And Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit	$ (391,124,000)	$ (346,378,000)
Cash and cash equivalents	81,900,000
Restricted cash	939,000	1,714,000
Working capital	89,700,000
Reclass restricted cash from short term to long-term		700,000
Highly liquid investment maximum period (days)	90
Letters of credit outstanding, amount	700,000	914,000
Allocated share-based compensation expense	13,513,000	9,441,000	8,366,000
Unrecognized compensation cost	26,100,000
Sales revenue from major customer, amount	15,500,000	9,600,000
Money back guarantee period (days)	30
Revenue from grants	2,100,000	6,900,000
Revenue from grants, percentage	3.00%	14.00%
Fair value, level 1 to level 2 transfers, amount		43,200,000
Chief Executive Officer [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, bonus target percentage	100.00%
President [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, bonus target percentage	90.00%
Chief Operating Officer And Chief Technology Officer [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, bonus target percentage	75.00%
Senior Vice President [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, bonus target percentage	45.00%
Vice Presidents [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, bonus target percentage	35.00%
Non-Sales Management Employees [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, bonus target percentage	30.00%
Annual Revenue Goal [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, distribution of bonus targets	60.00%
Targeted Operating Loss Goal [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, distribution of bonus targets	20.00%
Performance Milestone Goal [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Compensation, distribution of bonus targets	20.00%
Computer Equipment [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful Life, average (years)	3
Machinery And Equipment [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful Life, average (years)	4
Furniture And Fixtures [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful Life, average (years)	5
Edgepark [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Entity Wide Revenue Major Customer Percentage	20.00%
Direct To Customer [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Sales revenue, goods, gross	14,500,000	12,800,000
Sales revenue, goods, gross, percentage	19.00%	26.00%
Gross Revenue Third Party Distribution [Member]
Organization And Summary Of Significant Accounting Policies [Line Items]
Sales revenue, goods, gross	$ 17,700,000	$ 4,700,000
Sales revenue, goods, gross, percentage	23.00%	10.00%

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