Subsequent Events (Details) (New Unsecured Credit Facility [Member] [Member], USD $) In Millions, unless otherwise specified	Jul. 18, 2013
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 200
MIH Unsecured Line of Credit Facility, Maximum Borrowing Capacity	225
Sub-limit for letters of credit	100
Optional increase in borrowing availability	$ 25.0
Minimum [Member]
Subsequent Event [Line Items]
Credit Facility, Basis Spread on Variable Rate	2.25%
Maximum [Member]
Subsequent Event [Line Items]
Credit Facility, Basis Spread on Variable Rate	3.25%