Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2021
Jan. 25, 2019
Jan. 31, 2019
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2019
Dec. 31, 2021
Dec. 31, 2018
Commitment And Contingencies [Line Items]                
Litigation settlement share issued 20,000              
Contingent loss on patent litigation settlement       $ (89,000)      
Accrued liability $ 600,000     6,027,000     $ 8,276,000  
Patent Litigation                
Commitment And Contingencies [Line Items]                
Contingent loss on patent litigation settlement             $ 300,000  
CAO Settlement Agreement | Patent Litigation                
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   20,000            
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, 20,000 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 on December 31, 2021.            
Litigation settlement amount in cash equal to difference between value of stock consideration   $ 1,000,000            
Contingent loss on patent litigation settlement               $ 1,500,000
Payment for litigation settlement in cash     $ 500,000          
Loss on litigation settlement           $ (200,000)    
Accrued liability       $ 800,000