Annual report pursuant to Section 13 and 15(d)

Earnings Per Share (EPS) (Details 2)

v2.4.0.6
Earnings Per Share (EPS) (Details 2)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Weighted average conversion of common units
     
Antidilutive securities      
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 4,355,000 4,608,000 5,717,000
Weighted average conversion of convertible preferred units
     
Antidilutive securities      
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 176,000 176,000 176,000
Weighted average conversion of convertible preferred shares
     
Antidilutive securities      
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 434,000 434,000 434,000
Weighted average restricted shares
     
Antidilutive securities      
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 638,000 666,000 662,000
Weighted average options
     
Antidilutive securities      
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 712,000 653,000 814,000