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Earnings Per Share - Additional Information (Details)
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3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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| Earnings Per Share [Abstract] | |||||
| Weighted average number of shares outstanding | 10,967,910 | 11,022,809 | 10,968,182 | 11,024,306 | |
| Number of shares outstanding | 10,967,987 | 10,967,987 | 10,968,839 | ||