Summary of Significant Accounting Policies (Details 3)			12 Months Ended
	Nov. 01, 2012 item	Oct. 31, 2012 item	Dec. 31, 2012 Internal Use Software Y	Dec. 31, 2012 Computer equipment and software Y	Dec. 31, 2012 Furniture and fixtures Y	Dec. 31, 2012 Telephone system Y
Property and equipment
Useful life, minimum (in years)			3	3	3	3
Useful life, maximum (in years)			5	5	5	5
Goodwill
Number of reporting units for goodwill impairment test	1	2