Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands |
3 Months Ended |
Mar. 31, 2016 |
Mar. 31, 2015 |
| Earnings Per Share [Abstract] |
|
|
|
| Outstanding stock options (in shares) |
0
|
0
|
|
| Distributed earnings allocated to common stock |
$ 4,686
|
$ 4,296
|
|
| Undistributed earnings allocated to common stock |
9,017
|
9,063
|
|
| Net earnings allocated to common stock |
13,703
|
13,359
|
|
| Net earnings allocated to participating securities |
115
|
152
|
|
| Net income allocated to common stock and participating securities |
$ 13,818
|
$ 13,511
|
|
| Weighted average shares outstanding for basic earnings per common share |
25,923,530
|
26,258,273
|
[1] |
| Dilutive effect of stock compensation (in shares) |
0
|
0
|
|
| Weighted average shares outstanding for diluted earnings per common share |
25,923,530
|
26,258,273
|
[1] |
| Basic earnings per common share (in dollars per share) |
$ 0.53
|
$ 0.51
|
[1] |
| Diluted earnings per common share (in dollars per share) |
$ 0.53
|
$ 0.51
|
[1] |
|
|