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Stock-Based Compensation Plans (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
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Jun. 30, 2012
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 80 | 84 | 303 | 168 |
| Share based compensation expense | $ 3,125 | $ 1,304 | $ 5,346 | $ 2,480 |
|
2004 Incentive Stock Plan [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 68 | 73 | 291 | 157 |
| Restricted stock awards remaining to grant | 56 | |||
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2004 Restricted Stock Plan For Non Employee Directors [Member]
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||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 12 | 11 | 12 | 11 |
| Share based compensation expense | $ 600 | $ 300 | ||
|
Executive Officer [Member] | 2004 Incentive Stock Plan [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 27 | 13 | ||