Stock Compensation - Performance Share Grants with Performance Conditions (Details) (Performance Shares)	9 Months Ended
	Sep. 30, 2013
Performance Share Grants with Performance Conditions [Abstract]
Below threshold performance	0
Threshold and Target performance	407,757
Minimum
Performance Share Grants with Performance Conditions [Abstract]
Threshold and Target performance	82,878
Maximum
Performance Share Grants with Performance Conditions [Abstract]
Maximum performance	595,575