Subsequent Events Subsequent Events (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Jun. 20, 2008	Jun. 25, 2004	Apr. 06, 2015
Common Class A [Member]
Subsequent Event [Line Items]
Common stock, par value	$ 1.00	$ 1	$ 1.00	$ 1.00
Common Class B [Member]
Subsequent Event [Line Items]
Common stock, par value	$ 1.00	$ 1
Newco Merger [Member] | Common Class A [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Common stock, par value					$ 0.01
Newco Merger [Member] | Common Class B [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Common stock, par value					$ 0.01