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Earnings Per Share - Additional Information (Details)
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3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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Dec. 31, 2013
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| Earnings Per Share [Abstract] | |||||
| Weighted average number of shares outstanding | 10,941,544 | 11,005,413 | 10,957,546 | 11,016,902 | |
| Number of shares outstanding | 10,889,139 | 10,889,139 | 10,968,839 | ||