Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share ("EPS") (Details 2)

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Earnings Per Share ("EPS") (Details 2)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Weighted average conversion of common units
   
Antidilutive securities    
Antidilutive securities excluded from computation of diluted earnings per share (in shares)   4,396,000
Weighted average conversion of convertible preferred units
   
Antidilutive securities    
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 176,000 176,000
Weighted average conversion of convertible preferred shares
   
Antidilutive securities    
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 434,000 434,000
Weighted average restricted shares
   
Antidilutive securities    
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 572,000 651,000
Weighted average options
   
Antidilutive securities    
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 819,000 1,200,000