Share Based and Deferred Compensation Share Based and Deferred Compensation (Option Activity) (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	5 years 8 months 6 days	7 years 2 months 13 days
Share Based Compensation Arrangement By Share Based Payment Award Option Activity [Abstract]
Outstanding at the beginning of year, shares	3,337,549
Outstanding at beginning of year, Weighted Average Exercise Price	$ 14.50
Outstanding at beginning of year, Aggregate Intrinsic Value	$ 0
Granted, shares	0
Granted, Weighted Average Grant Date Fair Value	$ 0.00
Exercised in Period, Shares	(166,620)
Exercises in Period, Weighted Average Grant Date Fair Value	$ 10.26
Forfeited, shares	(117,662)
Forfeited, Weighted Average Grant Date Fair Value	$ 18.61
Outstanding at the end of year, shares	3,053,267.000	3,337,549
Outstanding at end of year, Weighted Average Exercise Price	$ 15.35	$ 14.50
Outstanding at end of year, Aggregate Intrinsic Value	0	0
Vested/Exerciseable, shares	2,868,838
Vested/Exerciseable at end of period, Weigted Average Exercise Price	$ 15.58
Vested/Exerciseable at end of period, Weighted Average Remaining Contractual Term (in years)	5 years 6 months 23 days
Vested/Exercisable at end of year, Aggregate Intrinsic Value	$ 0
Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award Option Activity [Abstract]
Vested/Exerciseable, shares	2,868,838