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Earnings Per Unit (EPU) - Non-Participating Securities (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Restricted Unit Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Non-Participating Securities Outstanding	73,400	483,500
Long-Term Incentive Program
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of Non-Participating Securities Outstanding	718,960	0

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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