Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.21.1
Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2020
USD ($)
Segment
$ / shares
shares
Jun. 30, 2020
shares
Dec. 31, 2019
USD ($)
Stockholder
$ / shares
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
Oct. 31, 2019
$ / shares
Oct. 29, 2019
$ / shares
shares
Accounting Policies [Line Items]              
Restricted cash | $ $ 312,000   $ 312,000        
Depreciation expense | $ 500,000   1,000,000 $ 900,000      
Losses on disposal of internally developed software | $ $ 0   $ 0 $ 1,200,000      
Number of reporting segment | Segment 1            
Convertible preferred stock, shares issued and sold 0   70,000        
Series E Preferred stock, par value | $ / shares $ 0.001   $ 0.001        
Common stock, par value | $ / shares $ 0.001   $ 0.001        
Share price | $ / shares           $ 0.5750  
Series E Preferred stock, shares issued 0   70,000        
Series E Preferred stock, shares outstanding 0   70,000        
Revenue from products and services transferred to customers, percentage 81.00%   81.00% 86.00%      
Revenue from services transferred to customers over time, percentage 19.00%   19.00% 14.00%      
Undelivered elements (product training, installation, product and support services) | $ $ 670,000   $ 559,000        
Revenue recognized from contract liability | $ 300,000   500,000        
Extended warranties recognized | $ 2,000,000   2,100,000        
Deferred royalties recognized | $ 0   0        
Advertising costs | $ 600,000   500,000 $ 600,000      
Compensation cost related to stock options | $ 3,370,000   2,742,000 $ 2,768,000      
Total unrecognized compensation cost | $ $ 1,000,000   2,700,000        
Unrecognized share based compensation cost to be recognized over weighted-average period 1 year            
Valuation allowance | $ $ (56,035,000)   $ (53,222,000)        
Outstanding stock options, restricted stock units and warrants excluded from diluted loss per share 61,122,000   6,922,000 5,862,000      
Shares issued 97,708,502   31,439,000        
Series F Preferred stock, par value | $ / shares $ 0.001   $ 0.001        
Executives              
Accounting Policies [Line Items]              
Fair value assumptions, forfeiture rate 10.87%            
Employees              
Accounting Policies [Line Items]              
Fair value assumptions, forfeiture rate 49.43%            
Performance-Based Awards              
Accounting Policies [Line Items]              
Compensation cost related to stock options | $ $ 900,000            
U S | Maximum              
Accounting Policies [Line Items]              
Product warrant period 2 years   2 years        
U S | Waterlase Systems              
Accounting Policies [Line Items]              
Product warrant period         1 year    
International | Maximum              
Accounting Policies [Line Items]              
Product warrant period 28 months   28 months        
Series E Convertible Preferred Stock              
Accounting Policies [Line Items]              
Convertible preferred stock, shares issued and sold 0   69,565        
Series E Preferred stock, par value | $ / shares     $ 0.001        
Convertible preferred shares issuable to number of equity stockholders | Stockholder     2        
Percentage of common stock holding by shareholders     60.00%        
Convertible preferred stock, shares issued upon conversion     100       100
Temporary equity numbers of shares sold     69,565        
Conversion Of Preferred Stock Into Common Stock     6,956,500        
Temporary equity net proceeds from conversion to common stock | $     $ 4,000,000        
Series E Preferred stock, shares issued 0   69,565        
Series E Preferred stock, shares outstanding 0   69,565        
Series F Preferred Stock              
Accounting Policies [Line Items]              
Series F Preferred stock, par value | $ / shares $ 0.001            
Private Placement | Series E Convertible Preferred Stock              
Accounting Policies [Line Items]              
Convertible preferred stock, shares issued and sold             69,565
Common stock, par value | $ / shares     $ 0.001        
Share price | $ / shares     $ 57.50       $ 57.50
Convertible preferred stock, shares issued upon conversion 882            
Temporary equity numbers of shares sold   69,565          
Conversion Of Preferred Stock Into Common Stock 6,956,500            
Temporary equity net proceeds from conversion to common stock | $ $ 4,000,000            
Series E Preferred stock, shares issued             69,565
Shares issued 2,205,000            
Corporate Credit Cards              
Accounting Policies [Line Items]              
Restricted cash | $ $ 200,000            
Western Alliance | Commercial Credit Card              
Accounting Policies [Line Items]              
Restricted cash | $ $ 100,000