Annual report pursuant to Section 13 and 15(d)

Acquisitions and Loss on Impairment of TLL, LLC - Additional Information (Detail)

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Acquisitions and Loss on Impairment of TLL, LLC - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
May 05, 2017
Aug. 01, 2016
May 05, 2016
Jan. 31, 2016
Jan. 31, 2017
Feb. 29, 2016
Jan. 31, 2017
May 04, 2016
Jan. 31, 2018
Jan. 31, 2017
Jan. 31, 2016
Business Acquisition [Line Items]                      
Payments to acquire business                   $ 5,243,000 $ 11,686,000
Acquisition, goodwill identified                   7,255,000  
Operating loss                 $ (5,410,000) (54,146,000) (48,199,000)
Loss on impairment         $ 500,000   $ 23,500,000     23,772,000 21,464,000
Severance and restructuring charges                 $ 4,740,000 7,151,000 1,061,000
DCC Labs [Member]                      
Business Acquisition [Line Items]                      
Percentage of equity interest acquired     100.00%                
Payments to acquire business, paid in shares     $ 2,640,000                
Net purchase price of acquired business     7,883,000                
Payments to acquire business     5,243,000                
Cash held in escrow $ 300,000   $ 500,000                
Shares initially held in escrow 227,090   681,278                
Business acquisition date                 May 05, 2016    
Acquisition, goodwill identified $ 7,300,000                    
Operating loss               $ 1,200,000      
Business acquisition related costs                   $ 200,000  
Loss on impairment   $ 23,500,000                  
Timeline Labs [Member]                      
Business Acquisition [Line Items]                      
Loss on impairment       $ 21,900,000             21,900,000
Contingent consideration liability, fair value       $ 0         $ 0   0
Loss on impairment due to reversal of contingent consideration liability                 $ 400,000   $ 400,000
Severance and restructuring charges           $ 700,000