Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 14, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Trading Symbol	BIOL
Entity Registrant Name	BIOLASE, INC.
Entity Central Index Key	0000811240
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Document Financial Statement Error Correction [Flag]	false
Entity Common Stock, Shares Outstanding			32,522,593
Entity Public Float				$ 7,185,686
Entity File Number	001-36385
Entity Tax Identification Number	87-0442441
Entity Address, Address Line One	27042 Towne Centre Drive
Entity Address, Address Line Two	Suite 270
Entity Address, City or Town	Lake Forest
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92610
City Area Code	949
Local Phone Number	361-1200
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common stock, par value $0.001 per share
Security Exchange Name	NASDAQ
Document Annual Report	true
Document Transition Report	false
Auditor Name	Macias Gini & O’Connell, LLP	BDO USA, P.C.
Auditor Location	Irvine, CA	Costa Mesa, California
Auditor Firm ID	324	243
Documents Incorporated by Reference [Text Block]	Portions of the registrant’s definitive proxy statement related to its 2024 Annual Meeting of Stockholders, to be filed with the Securities and Exchange Commission pursuant to Regulation 14A within 120 days after the registrant’s fiscal year ended December 31, 2023, are incorporated by reference into Part III of this Annual Report on Form 10-K.