Annual report pursuant to Section 13 and 15(d)

Income Taxes - Income Tax Provision (Benefit) for Continuing Operations Computed Using Federal Statutory Income Tax Rate (Detail)

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Income Taxes - Income Tax Provision (Benefit) for Continuing Operations Computed Using Federal Statutory Income Tax Rate (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2015
Income Tax Disclosure [Abstract]      
Statutory U.S. federal tax rate $ (19,816) $ (17,066) $ (10,014)
State taxes, net of federal tax benefit 32 33 (779)
Income (losses) not benefited 10,679 15,712 8,913
Non-deductible stock compensation expense 266 3  
Other non-deductible items 252 (31) (74)
Innovative technology and development incentive   (189) (68)
Foreign tax rate differential 3,499 509 916
APB 23 deferred tax liability 14,675    
Goodwill impairment 5,044    
Income tax (benefit) provision $ 14,631 $ (1,029) $ (1,106)