Income Taxes (Details 2) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Schedule of income tax expense related to continuing operations
Computed "expected" income tax	$ 12,510,000	$ 4,068,000
Increase (decrease) resulting from:
State income taxes, net	1,459,000	460,000
Permanent differences	(730,000)	(138,000)
Federal income tax true-up and other adjustments	401,000	166,000
Income tax expense	$ 13,640,000	$ 4,556,000