Property Plant and Equipment (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Property, Plant and Equipment (Textual) [Abstract]
Depreciation expense	$ 136,000	$ 132,000	$ 265,000	$ 249,000
Cost of maintenance & repair	55,000	79,000	121,000	171,000
Rent expense included in the selling, general and administrative expenses of continuing operations	34,000	107,000	69,000	219,000
Rent expense incurred at project sites and included in cost of revenues	$ 782,000	$ 961,000	$ 1,799,000	$ 4,254,000