|
Summary of Significant Accounting Policies Warranty (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2010
|
|
| Warranty Accrual [Abstract] | |||
| Product Warranty Accrual | $ 152 | $ 472 | $ 813 |
| Product Warranty Accrual, Preexisting, Increase (Decrease) | (242) | (63) | |
| Usage | $ (78) | $ (278) | |