INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets and Liabilities (Details 3) - USD ($)	Jul. 31, 2015	Jan. 31, 2015
Assets:
Stock options	$ 1,985,000	$ 1,649,000
Purchased intangibles	1,066,000	1,132,000
Accrued liabilities	330,000	428,000
Other	84,000	107,000
Total Assets	3,465,000	3,316,000
Liabilities:
Purchased intangibles	(3,175,000)	(2,931,000)
Construction contracts	(1,055,000)	(830,000)
Property and equipment	(595,000)	(533,000)
Other	(117,000)	(32,000)
Total Liabilities	(4,942,000)	(4,326,000)
Net deferred tax liabilities	$ (1,477,000)	$ (1,010,000)