Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Effects of Adopting Topic 606 on Consolidated Financial Statements (Detail)

v3.19.1
Summary of Significant Accounting Policies - Summary of Effects of Adopting Topic 606 on Consolidated Financial Statements (Detail) - USD ($)
$ in Thousands
Jan. 31, 2019
Feb. 01, 2018
Jan. 31, 2018
Assets      
Unbilled receivables $ 5,448   $ 3,101
Prepaid expenses and other current assets 6,033   3,557
Liabilities      
Deferred revenue 10,746   14,433
Stockholders' equity:      
Accumulated deficit (184,303)   $ (148,620)
ASU 2014-09 [Member]      
Assets      
Unbilled receivables   $ 3,238  
Prepaid expenses and other current assets   4,381  
Liabilities      
Deferred revenue   13,075  
Stockholders' equity:      
Accumulated deficit   (146,301)  
Adjustment [Member] | ASU 2014-09 [Member]      
Assets      
Unbilled receivables 1,557 137  
Prepaid expenses and other current assets (554) 824  
Liabilities      
Deferred revenue 6,124 (1,358)  
Stockholders' equity:      
Accumulated deficit (5,120) $ 2,319  
Balance Without Adoption of ASC 606 [Member] | ASU 2014-09 [Member]      
Assets      
Unbilled receivables 7,005    
Prepaid expenses and other current assets 5,479    
Liabilities      
Deferred revenue 16,870    
Stockholders' equity:      
Accumulated deficit $ (189,423)