Pension Plan (Details Textual) (USD $)	1 Months Ended	9 Months Ended
Aug. 31, 2012	Jan. 31, 2013
Pension Benefit Plan Accelerated Funding		$ 11,700,000
Pension Contributions	$ 3,000,000
Description of Defined Contribution Pension and Other Postretirement Plans		The agreement also provides that if, before the expiration of one year from its date, the Company is unable to pay the remaining liability or adequately secure it with collateral acceptable to the PBGC, the Company will be required to either (i) provide a letter of credit equal to 110% of the remaining liability or establish a cash escrow for 100% of the remaining liability, to be maintained for five years or until the remaining liability is discharged, if sooner or (ii) discharge the remaining liability in quarterly installments over a five year period and secure it with collateral acceptable to the PBGC.

- Definition

Description of the terms and benefits provided by the employer's defined contribution plans. A defined contribution plan provides benefits in return for services rendered, provides an individual account for each participant, and has terms that specify how contributions to the individual's account are to be determined rather than the amount of benefits the individual is to receive. Under a defined contribution pension plan, the benefits a participant will receive depend solely on the amount contributed to the participant's account, the returns earned on investments of those contributions, and forfeitures of other participants' benefits that may be allocated to such participant's account. A description of the plan(s) including employee groups covered, the basis for determining contributions, and the nature and effects of significant matters affecting comparability of information for all periods presented.

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