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Earnings Per Share - Potentially Dilutive Securities Earnings Per Share (Detail) (Stock Options [Member]) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Options [Member]
Earnings Per Share, Diluted, Other Disclosures [Abstract]
Antidilutive securities excluded from computation of EPS		346	539

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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