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Loss on Extinguishment of Debt	3 Months Ended
Loss on Extinguishment of Debt	Apr. 30, 2013
Extinguishment of Debt Disclosures [Abstract]
Loss on Extinguishment of Debt [Text Block]	Loss on Extinguishment of Debt For the three months ended April 30, 2013 and 2012, the Company recorded $5,238,000 and $719,000, respectively, as loss on extinguishment of debt. The amount for 2013 primarily relates to a non-tax deductible loss of $4,762,000 on the exchange of the 2014 Senior Notes for Class A common stock (See Note D – Senior and Subordinated Debt).