Ownership and Management of the Company (Details) (VoteCo)	Aug. 31, 2012
Timothy T. Janszen
Ownership and Management of the Company [Line Items]
Beneficial ownership by third party of shareholder	42.85%
Ryan L. Langdon
Ownership and Management of the Company [Line Items]
Beneficial ownership by third party of shareholder	42.85%
Roger A. May
Ownership and Management of the Company [Line Items]
Beneficial ownership by third party of shareholder	14.30%