Earnings per Share Series A-1 Preferred Stock (Details) (Series A-1 Preferred Stock [Member])	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Series A-1 Preferred Stock [Line Items]
Weighted average shares impact resulting from conversion of preferred stock	5,984,232	3,058,607
The Carlyle Group [Member]
Series A-1 Preferred Stock [Line Items]
Shares issued with conversion of Preferred Stock		5,984,232