Stockholders' Equity (Details) - USD ($)	Jun. 30, 2015	Apr. 06, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 20, 2008	Jun. 25, 2004
Class of Stock [Line Items]
Maximum dividend payment which may be paid without prior approval from Colorado Division of Insurance	$ 118,200,000.0
Common Class A [Member]
Class of Stock [Line Items]
Common stock, par value	$ 1.00		$ 1.00	$ 1	$ 1.00	$ 1.00
Common Class B [Member]
Class of Stock [Line Items]
Common stock, par value	$ 1.00		$ 1.0	$ 1
Newco Merger [Member] | Common Class A [Member]
Class of Stock [Line Items]
Common stock, par value		$ 0.01
Newco Merger [Member] | Common Class B [Member]
Class of Stock [Line Items]
Common stock, par value		$ 0.01