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Stock Based Compensation (Schedule of Changes to Equity Plan) (Details) (Equity Plan)
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9 Months Ended | 12 Months Ended |
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Sep. 30, 2013
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Dec. 31, 2012
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Equity Plan
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| Changes to the Company's Equity Plan | ||
| Balance at beginning of period | 102,984 | 100,153 |
| Granted | 19,310 | 33,600 |
| Vested | (37,485) | 0 |
| Forfeited | (4,728) | (30,769) |
| Balance at end of period | 80,081 | 102,984 |