Equity Transactions and Stock-Based Compensation Plans Schedule of Restricted Stock Activity (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Number of Award Units	0	0
Time-Based RSUs [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Number of Award Units	153,278	205,313
Granted, Weighted-Average Grant-Date Fair Value per Unit	7.66	9.07
Time-Based RSUs [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Granted, Number of Award Units	50,858	221,495
Granted, Weighted-Average Grant-Date Fair Value per Unit	8.34	9.85