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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Stock-based Compensation [Abstract] |
Summary of Stock Option Activity [Table Text Block] |
|  |  |  |  |  | Weighted |  | Aggregate
|  |  |  | Weighted |  | Average |  | Intrinsic
|  |  |  | Average |  | Remaining |  | Value
|  |  |  | Exercise |  | Contractual |  | (Dollars in
|  | Shares |  | Price |  | Term |  | thousands)
Outstanding and Exercisable at January 1, 2013 |  | 22,500 | $ | 10.41 |  | 2.2 |  |
Granted |  | - |  | - |  | - |  |
Canceled |  | - |  | - |  | - |  |
Exercised |  | (3,750) |  | 9.30 |  | - |  |
Outstanding and Exercisable at September 30, 2013 |  | 18,750 | $ | 10.64 |  | 1.5 | $ | 658
Schedule of Restricted Stock Awards [Table Text Block] |
|  |  |  |  | Aggregate Grant
|  |  | Grant Date |  | Date Fair Value
Grant Date | Shares |  | Share Price |  | (Dollars in Thousands)
February 1, 2012 | 66,000 | $ | 30.15 | $ | 1,990
March 6, 2012 | 18,347 |  | 27.49 |  | 504
May 23, 2012 | 8,000 |  | 28.05 |  | 224
February 27, 2013 | 12,973 |  | 42.49 |  | 551
Schedule of Performance Unit Awards [Table Text Block] |
|  |  |  |  |  | Aggregate Grant
Incentive |  |  |  | Grant Date |  | Date Fair Value
Plan | Grant Date | Units |  | Share Price |  | (Dollars in Thousands)
2011 - 2013 | March 15, 2011 | 34,002 | $ | 38.46 | $ | 1,308
2012 - 2014 | March 6, 2012 | 43,042 |  | 27.49 |  | 1,183
2013 - 2015 | February 27, 2013 | 31,418 |  | 42.49 |  | 1,335

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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the change in stock options. + References No definition available. + Details
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- Details
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