Summary of Significant Accounting Policies Property, Plant, and Equipment Policy Additional Information (Details) (USD $) | 9 Months Ended | |||
|---|---|---|---|---|
Sep. 30, 2011
Building and Building Improvements [Member] | Sep. 30, 2011
Machinery and equipment, computers and purchased software, and furniture [Member] | Sep. 30, 2011
Assets Held-for-sale [Member] | Dec. 31, 2010
Assets Held-for-sale [Member] | |
| Property, Plant and Equipment [Line Items] | ||||
| Property, Plant and Equipment, Useful Life, Average | 30 | |||
| Property, Plant and Equipment, Useful Life, Minimum | 3 | |||
| Property, Plant and Equipment, Useful Life, Maximum | 10 | |||
| Assets Held-for-sale, at Carrying Value | $ 0 | $ 0 | ||