Composition Of Certain Financial Statement Captions - Other Long Term Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Other Long Term Liabilities [Line Items]
Other long-term liabilities	$ 5,752	$ 6,403
Unrecognized Tax Benefit
Other Long Term Liabilities [Line Items]
Other long-term liabilities	5,202	5,212
Other Liabilities
Other Long Term Liabilities [Line Items]
Other long-term liabilities	$ 550	$ 1,191