Summary of Business Organization, Operations and Significant Accounting Policies (Stock Based Compensation) (Details) |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
Fair value of stock-based awards | |||
Risk free interest rates | 1.45% | 1.00% | 0.62% |
Expected volatility | 25.00% | 24.00% | 27.00% |
Expected dividend | 8.85% | 5.75% | 7.00% |
Restricted Stock Award | |||
Fair value of stock-based awards | |||
Risk free interest rates | 1.08% | 0.93% | 0.62% |
Expected volatility | 23.50% | 21.40% | 25.60% |
Beta | 1.04 | 0.78 | 0.74 |
Minimum | |||
Fair value of stock-based awards | |||
Expected term | 4 years | 4 years | 4 years |
Maximum | |||
Fair value of stock-based awards | |||
Expected term | 5 years | 5 years | 5 years |