Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.21.1
Commitments and Contingencies - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Feb. 04, 2020
ft²
Jan. 22, 2020
ft²
Jan. 25, 2019
USD ($)
shares
Jan. 01, 2019
USD ($)
Jan. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
ft²
Lease
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Commitment And Contingencies [Line Items]                
Lease term 66 months 5 years            
Operating lease, options to renew term           1 year    
Lessee, Operating Lease, Existence of Option to Extend [true false]           true    
Area of corporate headquarters and manufacturing facility | ft² 11,000 11,000       11,000    
Lease expiration date Jul. 01, 2020 Jul. 01, 2020       Dec. 31, 2025    
Operating lease, right-of-use asset           $ 1,976,000 $ 276,000  
Operating lease, liability           $ 2,079,000 326,000  
Lessee, operating lease incremental borrowing rate       12.78%        
Operating lease not yet commenced description           As of December 31, 2020, the Company had no leases that had not commenced.    
Number of operating leases not yet commenced | Lease           0    
Rent expense           $ 700,000 800,000 $ 800,000
Purchase commitments pending           11,400,000    
Contingent gain (loss) on patent litigation settlement               (1,500,000)
Accrued liability           6,667,000 4,744,000  
Employee Arrangements and Other Compensation                
Commitment And Contingencies [Line Items]                
Change in control, if occurs, may require severance benefits payable           2,000,000 3,000,000  
Accrued for performance bonuses           $ 800,000 $ 200,000  
Patent Litigation | Settlement Agreement                
Commitment And Contingencies [Line Items]                
Settlement agreement date     January 25, 2019          
Number of days litigation settlement to be paid in cash     5 days          
Litigation settlement in cash     $ 500,000          
Number of days litigation settlement shares to be issued     30 days          
Litigation settlement share issued | shares     500,000          
Number of days litigation settlement to be paid in value of stock consideration     30 days          
Settlement agreement, terms           The Company agreed (i) to pay to CAO, within five days of the Effective Date, $500,000 in cash, (ii) to issue to CAO, within 30 days of the Effective Date, 500,000 restricted shares of BIOLASE common stock (the “Stock Consideration”), and (iii) to pay to CAO, within 30 days of December 31, 2021, an amount in cash equal to the difference (if positive) between $1,000,000 and the value of the Stock Consideration as of December 31, 2021.    
Litigation settlement amount in cash equal to difference between value of stock consideration     $ 1,000,000          
Contingent gain (loss) on patent litigation settlement           $ 0   $ (1,500,000)
Payment for litigation settlement in cash         $ 500,000      
Accrued liability           $ 1,000,000    
ASU 2016-02                
Commitment And Contingencies [Line Items]                
Operating lease, right-of-use asset       $ 800,000        
Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List       Other assets        
Adjustment for deferred rent       $ 200,000        
Operating Lease, Liability, Statement of Financial Position [Extensible List]       us-gaap:OtherLiabilities        
Operating lease, liability       $ 1,000,000        
Cumulative-effect adjustment to retained earnings       $ 0        
Manufacturing Facility                
Commitment And Contingencies [Line Items]                
Lease expiration date           Jun. 30, 2025    
Minimum                
Commitment And Contingencies [Line Items]                
Lease term           1 year    
Maximum                
Commitment And Contingencies [Line Items]                
Lease term           5 years