Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.19.1
Income Taxes - Additional Information (Detail) - USD ($)
 1 Months Ended 11 Months Ended 12 Months Ended
Jan. 31, 2018
Dec. 31, 2017
Jan. 31, 2019
Jan. 31, 2018
Income Taxes Disclosure [Line Items]        
Corporate federal income tax rate 21.00% 35.00%    
Limitation on deduction for net operating losses, percentage 80.00%      
Transition tax offset $ 3,900,000     $ 3,900,000
Provisional reduction of net deferred tax assets due to tax reform act       17,100,000
Tax impact related to GILTI     $ 0  
Deferred tax assets, operating loss carry forwards, domestic     118,000,000  
Deferred tax assets, operating loss carry forwards, state and local     185,800,000  
Deferred tax assets, operating loss carry forwards, foreign     $ 2,100,000  
Operating loss carry forwards, expiry beginning year     2020  
Deferred tax assets, tax credit carry forwards, foreign     $ 2,300,000  
Tax credit carry forward with an unlimited carryforward period     200,000  
Valuation allowance 38,305,000   41,979,000 38,305,000
Valuation allowance increased (decreased)     3,700,000 (19,800,000)
Unrecognized tax benefits which would reduce income tax expense if recognized     0  
Total gross interest accrued $ 100,000   100,000 $ 100,000
Federal [Member]        
Income Taxes Disclosure [Line Items]        
Deferred tax assets, tax credit carry forwards, research     3,800,000  
State and Local Jurisdiction [Member]        
Income Taxes Disclosure [Line Items]        
Deferred tax assets, tax credit carry forwards, research     1,800,000  
Deferred tax assets tax credit carry forward investment     $ 200,000