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Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended
	Apr. 30, 2011
Condensed Consolidated Statements of Operations (Unaudited) [Abstract]
Gain on disposal of discontinued operations	$ 152,000

Pretax gain (loss), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

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