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Investments (Details) - Schedule of Financial information For Equity Method Investment (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Patriot [Member]
Investments (Details) - Schedule of Financial information For Equity Method Investment [Line Items]
Net sales and revenue	$ 63,239	$ 80,409
Gross profit	3,818	13,785
Income from continuing operations	1,779	12,195
Net income	1,779	12,195
Big River [Member]
Investments (Details) - Schedule of Financial information For Equity Method Investment [Line Items]
Net sales and revenue	184,806	280,423
Gross profit	10,805	83,833
Income from continuing operations	10,377	52,121
Net income	$ 10,377	$ 52,121

The amount of gross profit (loss) reported by an equity method investment of the entity.

The amount of income (loss) from continuing operations before extraordinary items reported by an equity method investment of the entity.

The amount of net income (loss) reported by an equity method investment of the entity.