Shareholders' Deficit (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended			1 Months Ended
	Jan. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2014	Dec. 31, 2009	Jul. 22, 2011
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Preferred stock authorized shares		5,000,000	5,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, preferred shares		0	0		0	0
Beginning balance, common shares		10,173,000	7,976,000		10,173,000	6,847,000
Ending balance, preferred shares		0	0	0		0
Ending balance, common shares		30,667,000	10,173,000	7,976,000		6,847,000
Equity issuance proceeds	$ 250.0	$ 250.0	$ 0	$ 0
Previous maximum ownership percentage		19.99%
Amortization of Beneficial Conversion Feature on Preferred Stock		$ 18.1	$ 0	$ 0
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Common stock shares converted from preferred		(2,333,000)	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock	14,333,334	3,471,000	1,929,000	1,112,000	14,333,000
Common stock shares converted from preferred		2,333,000	0	0
Issuance of equity awards, net		357,000	268,000	17,000
Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock	583,334	0	0	0
Issuance of equity awards, net		0	0	0
Series A Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Preferred stock authorized shares							1
Liquidation value per share		$ 1	$ 1				$ 1
Shares issued		1	1				1
Series B Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Liquidation value per share		$ 0	$ 0
Shares issued		0	0
Common stock shares converted from preferred		(583,000)	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock		583,000	0	0
Common stock shares converted from preferred		583,000	0	0