Annual report pursuant to Section 13 and 15(d)

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

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Income Taxes - Income Tax (Benefit) Provision for Continuing Operations Computed Using Federal Statutory Income Tax Rate (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Income Tax Disclosure [Abstract]      
Statutory U.S. federal tax rate $ (17,066) $ (10,014) $ (774)
State taxes, net of federal tax benefit 33 (779) 33
Income (losses) not benefited 15,712 8,913 92
Non-deductible stock compensation expense 3   15
Other (31) (74) 694
Innovative technology and development incentive (189) (68) 260
Foreign tax rate differential 509 916 (265)
Income tax (benefit) provision $ (1,029) $ (1,106) $ 55