Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

Subsequent Event - Additional Information (Detail) - Private Placement - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Apr. 18, 2017
Mar. 31, 2017
Subsequent Event [Line Items]    
Warrants exercisable description   The Warrants become exercisable on October 18, 2017 and expire five years after the date of issuance or, if earlier, five business days after the Company delivers notice that the closing price per share of BIOLASE common stock exceeded the Exercise Price for 20 consecutive trading days during the exercise period.
Subsequent Event    
Subsequent Event [Line Items]    
Aggregate unregistered shares 80,644  
Number of Warrants to purchase aggregate unregistered shares of common stock 3,925,871  
Conversion of stock, each shares issued 100  
Stock conversion, price $ 1.24  
Warrants exercisable date Oct. 18, 2017  
Warrants exercisable of private placement term expiration period 5 years  
Proceeds from equity offering, gross $ 10.5  
Number of consecutive trading days 20 days