Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of Impact from Adoption of Topic 606 (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Summary of Impact from Adoption of Topic 606 (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Revenue Initial Application Period Cumulative Effect Transition [Line Items]          
Revenues $ 9,211 $ 6,846 $ 25,045 $ 17,244  
Costs 4,169 3,457 11,427 8,820  
Gross profit 5,042 3,389 13,618 8,424  
Sales and marketing 2,453 1,792 6,202 4,269  
Operating loss (1,519) (771) (3,035) (2,075)  
Net loss (1,441) $ (1,611) (3,027) $ (7,477)  
Assets          
Prepaid expenses and other current assets 1,598   1,598   $ 839
Other assets 2,079   2,079   143
Total assets 43,244   43,244   36,198
Liabilities          
Deferred revenue, short-term 19,170   19,170   15,780
Total current liabilities 26,203   26,203   21,222
Deferred revenue, long-term 1,177   1,177   2,710
Total liabilities 27,465   27,465   $ 24,036
Adoption of Topic 606 | Effect of Change Increase/(Decrease)          
Revenue Initial Application Period Cumulative Effect Transition [Line Items]          
Revenues 174   296    
Gross profit 174   296    
Sales and marketing (200)   (457)    
Operating loss (374)   (753)    
Net loss (374)   (753)    
Assets          
Prepaid expenses and other current assets 614   614    
Other assets 1,599   1,599    
Total assets 2,213   2,213    
Liabilities          
Deferred revenue, short-term (558)   (558)    
Total current liabilities (558)   (558)    
Deferred revenue, long-term (900)   (900)    
Total liabilities (1,458)   (1,458)    
Adoption of Topic 606 | Amounts Without Adoption of Topic 606          
Revenue Initial Application Period Cumulative Effect Transition [Line Items]          
Revenues 9,037   24,749    
Costs 4,169   11,427    
Gross profit 4,868   13,322    
Sales and marketing 2,653   6,659    
Operating loss (1,893)   (3,788)    
Net loss (1,815)   (3,780)    
Assets          
Prepaid expenses and other current assets 984   984    
Other assets 480   480    
Total assets 41,031   41,031    
Liabilities          
Deferred revenue, short-term 19,728   19,728    
Total current liabilities 26,761   26,761    
Deferred revenue, long-term 2,077   2,077    
Total liabilities $ 28,923   $ 28,923