Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.7.0.1
Fair Value Measurements - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2016
Jan. 31, 2017
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2015
Feb. 28, 2015
Fair Value Measurements Disclosure [Line Items]                
Fair value measurements of our financial assets and liabilities $ 15,922,000 $ 12,970,000 $ 12,970,000 $ 15,922,000 $ 12,970,000 $ 15,922,000    
Goodwill impairment charge         23,492,000      
Loss on impairment of long-lived assets held for sale   300,000            
Loss on impairment   500,000 23,500,000 21,500,000 $ 23,772,000 21,464,000    
Contingent consideration liability, fair value 0     0   0   $ 3,200,000
Maximum maturity of marketable securities         Three months or less      
Other than temporary declines in investments         $ 0 0 $ 0  
Cash equivalents and marketable securities 71,100,000 38,700,000 38,700,000 71,100,000 38,700,000 71,100,000    
Restricted cash related to performance obligations 82,000 109,000 109,000 82,000 109,000 82,000    
Timeline Labs [Member]                
Fair Value Measurements Disclosure [Line Items]                
Goodwill impairment charge 15,800,000         15,800,000    
Loss on impairment 21,900,000         21,900,000    
Intangible assets impairment charge 5,200,000         5,200,000    
Capitalized internal use software impairment charge 900,000         900,000    
Loss on impairment due to reversal of contingent consideration liability         400,000 400,000    
Contingent consideration liability, fair value 0 0 0 0 0 0    
Fair Value, Inputs, Level 3 [Member]                
Fair Value Measurements Disclosure [Line Items]                
Fair value measurements of our financial assets and liabilities 0 0 0 0 0 0    
Cash Related to Performance Obligations [Member]                
Fair Value Measurements Disclosure [Line Items]                
Restricted cash related to performance obligations $ 100,000 $ 100,000 $ 100,000 $ 100,000 $ 100,000 $ 100,000