Nature Of Business And Summary Of Significant Accounting Policies (Schedule Of Percent Of Total Revenue Associated With Each Major Customer) (Details)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Distributor A [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Percent of total revenues	17.00%	0.00%	0.00%
Distributor B [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Percent of total revenues	16.00%	0.00%	0.00%
Distributor C [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Percent of total revenues	10.00%	0.00%	0.00%
Collaborator A [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Percent of total revenues	29.00%	15.00%	0.00%
Collaborator B [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Percent of total revenues	0.00%	77.00%	80.00%