Income Taxes - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets and Liabilities (Detail) (USD $)	Jan. 31, 2014	Jan. 31, 2013
Assets:
Purchased intangibles	$ 1,255,000	$ 1,407,000
Stock options	1,623,000	1,675,000
Accrued liabilities	514,000	855,000
Moxie Project net operating losses		432,000
Other	50,000	144,000
Total Asset	3,442,000	4,513,000
Liabilities:
Purchased intangibles	(2,563,000)	(2,258,000)
Property and equipment	(612,000)	(581,000)
Long-term contracts	(313,000)
Other	(68,000)	(35,000)
Total Liabilities	(3,556,000)	(2,874,000)
Net deferred tax (liabilities) assets	$ (114,000)	$ 1,639,000