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Earnings Per Share - Additional Information (Details)	12 Months Ended
Earnings Per Share - Additional Information (Details)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reverse stock split	1 for 5	1 for 5	1 for 5
Shares excluded from computation of diluted EPS	293,000	102,000	87,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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