| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| |
|
For the twelve months ended December 31: |
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| |
|
2015 |
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|
2014 |
|
|
2013 |
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| Numerator: |
|
|
|
|
|
|
|
|
|
|
|
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| Net income |
|
$ |
46,421 |
|
|
$ |
53,200 |
|
|
$ |
74,034 |
|
| Less: distributed earnings allocated to nonvested restricted stock |
|
|
(66 |
) |
|
|
(114 |
) |
|
|
- |
|
| Less: undistributed earnings allocated to nonvested restricted stock |
|
|
(237 |
) |
|
|
(258 |
) |
|
|
- |
|
| Numerator for basic earnings per share |
|
$ |
46,118 |
|
|
$ |
52,828 |
|
|
$ |
74,034 |
|
| Effect of dilutive securities: |
|
|
|
|
|
|
|
|
|
|
|
|
| Add: undistributed earnings allocated to nonvested restricted stock |
|
|
237 |
|
|
|
258 |
|
|
|
- |
|
| Less: undistributed earnings reallocated to nonvested restricted stock |
|
|
(237 |
) |
|
|
(258 |
) |
|
|
- |
|
| Numerator for diluted earnings per share |
|
$ |
46,118 |
|
|
$ |
52,828 |
|
|
$ |
74,034 |
|
| Denominator: |
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|
|
|
|
|
|
|
|
|
|
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| Weighted average shares outstanding - basic |
|
|
43,432,149 |
|
|
|
43,357,602 |
|
|
|
43,237,513 |
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| Effect of dilutive securities: |
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|
|
|
|
|
|
|
|
|
|
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| Stock options and other awards |
|
|
13,581 |
|
|
|
34,409 |
|
|
|
39,418 |
|
| Weighted average shares outstanding – diluted |
|
|
43,445,730 |
|
|
|
43,392,011 |
|
|
|
43,276,931 |
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| |
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|
|
|
|
|
|
|
|
|
|
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| Basic earnings per share |
|
$ |
1.06 |
|
|
$ |
1.22 |
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|
$ |
1.71 |
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| Diluted earnings per share |
|
$ |
1.06 |
|
|
$ |
1.22 |
|
|
$ |
1.71 |
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|