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Income Taxes (Details) (USD $)	6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Company's income tax expense relating to continuing operations
Computed expected income tax expense	$ 5,823,000	$ 1,177,000
State income taxes, net of federal tax benefit	630,000	137,000
Permanent differences, net	(406,000)	(126,000)
Other, net	61,000	10,000
Total	$ 6,108,000	$ 1,198,000

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

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