|
Summary of Significant Accounting Policies , Basis of Presentation (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Sep. 30, 2013
|
Dec. 31, 2013
|
Dec. 31, 2009
|
|
| Accounting Policies [Abstract] | |||
| Out-of-period Adjustment Relating to Retired Treasury Stock | $ 3.0 | ||
| Repurchase and retirement of common stock (in shares) | 2,100,000 | 1,409,264 | |