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Earnings Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
Earnings Per Share - Additional Information (Detail)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Computation Of Earnings Per Share Line Items
Weighted average shares outstanding on a basic and diluted basis	50,646,879	50,611,879	50,628,088	50,611,879
Weighted average shares related to stock options	0	55,000	30,311	55,000

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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