|
Share-Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Allocated Share-based Compensation Expense | $ 2,707 | $ 1,540 |
| Excess Tax Benefit on Stock Plans | 648 | 169 |
| Restricted shares | ||
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Shares granted | 15,080 | |
| Weighted average grant date fair value, in dollars per share | $ 66.97 | |
| Vesting period of new awards granted | 3 years | |
| Fair value of shares vested | $ 811 | $ 807 |