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Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		6 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 5,203,000	$ 6,210,000	$ 1,348,000	$ 1,763,000
Other comprehensive income (loss) :
Pension adjustments, net of tax	321,000	402,000	642,000	804,000
Comprehensive income (loss)	$ 5,524,000	$ 6,612,000	$ 1,990,000	$ 2,567,000

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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