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Income Per Share - Additional Information (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Per Share (Textual) [Abstract]
Additional dilutive shares related to share-based compensation	415	304	336
Stock options
Income Per Share (Textual) [Abstract]
Common stock shares effect would be anti-dilutive	47	110	304

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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