XML 82 R67.htm IDEA: XBRL DOCUMENT v3.3.1.900
Incentive Plan (Summary Of Non-Vested Shares) (Details) - $ / shares
1 Months Ended 12 Months Ended
Feb. 28, 2014
Dec. 31, 2015
Incentive Plan [Abstract]    
Nonvested at beginning of period, Number of Shares   2,193,671
Granted during period, Number of Shares 283,223 888,104
2014 Performance shares adjustment during period, Number of Shares   (163,603)
Vested during period, Number of Shares   (934,636)
Forfeited during period, Number of Shares   (16,160)
Nonvested at end of period, Number of Shares   1,967,376
Nonvested at beginning of period, Weighted Average Grant Date Fair Value Per Share   $ 19.56
Granted during period, Weighted Average Grant Date Fair Value Per Share   7.54
2014 Performance shares adjustment during period, Weighted Average Grant Date Fair Value Per Share   5.72
Vested during period, Weighted Average Grant Date Fair Value Per Share   16.75
Forfeited during period, Weighted Average Grant Date Fair Value Per Share   21.80
Nonvested at end of period, Weighted Average Grant Date Fair Value Per Share   $ 14.34