Employee Incentive Plans (2007 Stock Incentive Plan, ROI Summary) (Details) |
3 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2016
shares
| ||||
| 2007 Stock Incentive Plan (Shares) | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Beginning Balance | 8,935,082 | [1] | ||
| Shares Forfeited | (23,389) | |||
| Shares Distributed | (2,832) | |||
| Ending Balance | 8,908,861 | |||
| 2007 ROI Unit Stock Plan (Shares) [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Beginning Balance | 6,370 | |||
| Shares Distributed | (989) | |||
| Ending Balance | 5,381 | |||
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