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Income Taxes (Details) (USD $)	9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Company's income tax expense relating to continuing operations
Computed expected income tax expense	$ 9,093,000	$ 2,458,000
State income taxes, net of federal tax benefit	1,073,000	373,000
Permanent deductions, net	(648,000)	(257,000)
Other adjustments, net	223,000	84,000
Total	$ 9,741,000	$ 2,658,000

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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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