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INCOME TAXES - Schedule of Tax Effects of Temporary Differences that Gave Rise to Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jul. 31, 2016
Jan. 31, 2016
Assets:    
Net operating loss ("NOL") carryforwards $ 3,103 $ 3,345
Stock options 2,323 2,354
Purchased intangibles 1,763 1,905
Accrued expenses 2,310 2,144
Other 1,049 328
Total Assets 10,548 10,076
Liabilities:    
Construction contracts (3,282) (3,681)
Purchased intangibles (4,421) (4,375)
Property and equipment and other (2,410) (2,244)
Total Liabilities (10,113) (10,300)
Net deferred tax assets $ 435  
Net deferred tax liabilities   $ (224)