BIOLASE, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Presentation - Additional Information (Detail)

Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($)									1 Months Ended	3 Months Ended					6 Months Ended		9 Months Ended	12 Months Ended
	Aug. 12, 2020	Jul. 31, 2020	Jul. 22, 2020	Jun. 10, 2020	Jun. 08, 2020	May 22, 2020	May 14, 2020	Apr. 14, 2020	Jul. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2019	Jun. 30, 2020	May 15, 2020	Apr. 30, 2020	Dec. 31, 2018	Nov. 09, 2018
Basis Of Presentation [Line Items]
Net revenue										$ 2,938,000				$ 8,645,000	$ 7,721,000	$ 18,971,000
Proceeds from Offering				$ 6,900,000
Payments of equity offering costs				800,000											$ 991,000	38,000
Proceeds from issuance of equity securities				$ 6,900,000
Common stock, shares issued										50,387,000		31,439,000			50,387,000			50,387,000
Expiration Anniversary Date Of Issuance				5 years
Combined purchase price of shares and warrants				$ 0.64
Cash and cash equivalents, including restricted cash										$ 5,749,000		$ 6,101,000		$ 4,032,000	$ 5,749,000	$ 4,032,000		$ 5,749,000			$ 8,356,000
Accounts receivable, net										4,119,000		8,760,000			4,119,000			4,119,000
Equity raise of gross proceeds															6,900,000
Registered Direct Offering
Basis Of Presentation [Line Items]
Common stock, shares issued				10,800,000
Private Placement
Basis Of Presentation [Line Items]
Warrants issued to purchase shares of common stock				10,800,000
Exercise price of warrants				$ 0.515
Subsequent Event
Basis Of Presentation [Line Items]
Warrants issued to purchase shares of common stock			45,000,000
Proceeds from issuance of equity securities			$ 15,800,000
Aggregate number of units sold			18,000
Series F Convertible Preferred Stock \| Subsequent Event
Basis Of Presentation [Line Items]
Preferred stock public offering			18,000
SWKWarrantsMember
Basis Of Presentation [Line Items]
Warrants issued to purchase shares of common stock											487,198											372,023
Exercise price of warrants											$ 0.39198											$ 1.34
EIDL Loan
Basis Of Presentation [Line Items]
Note interest rate per annum						3.75%
Frequency of periodic payment						installment payments, including principal and interest, are due monthly beginning twelve months from the date of the EIDL Loan
Periodic payment amount						$ 731
EIDL Loan \| Loan Payable
Basis Of Presentation [Line Items]
Note interest rate per annum						3.75%
Principal amount						$ 150,000
Frequency of periodic payment						monthly
Loan redemption initial deferred period						12 months
Periodic payment amount						$ 731,000
Loan term						30 years
Debt instrument amount						$ 150,000
Pacific Mercantile Bank
Basis Of Presentation [Line Items]
Company Repaid										3,000,000					3,000,000			3,000,000
Outstanding Balance										0					0			0
Available balance										1,000,000					1,000,000			1,000,000
Pacific Mercantile Bank \| Revolving Credit Facility
Basis Of Presentation [Line Items]
Line of credit, outstanding borrowings																				$ 3,000,000
Pacific Mercantile Bank \| Paycheck Protection Program
Basis Of Presentation [Line Items]
Loan granted amount from bank							$ 2,980,000.00	$ 2,980,000
Note issued date							Apr. 13, 2020	Apr. 13, 2020
Note maturity date							Apr. 13, 2022	Apr. 13, 2022
Note interest rate per annum							1.00%	1.00%
Note payable commencing date							Nov. 01, 2020	Nov. 01, 2020
Note prepayment penalties							$ 0	$ 0
Pacific Mercantile Bank \| Credit Agreement, Fourth Amendment \| Subsequent Event
Basis Of Presentation [Line Items]
Proceeds from issuance of equity securities		$ 8,000,000
Pacific Mercantile Bank \| Credit Agreement First Amendment
Basis Of Presentation [Line Items]
Unrestricted cash required to be deposited with lenders										1,500,000					1,500,000			1,500,000
Pacific Mercantile Bank \| Credit Agreement First Amendment \| Subsequent Event
Basis Of Presentation [Line Items]
Proceeds from issuance of equity securities									$ 8,000,000
Unrestricted cash required to be deposited with lenders		1,500,000							$ 1,500,000
SWK Loan
Basis Of Presentation [Line Items]
Working capital										1,800,000					1,800,000			1,800,000
SWK Loan \| Maximum
Basis Of Presentation [Line Items]
Debt instrument covenants unencumbered liquid assets																						$ 1,500,000
SWK Loan \| Credit Agreement, Fourth Amendment \| Maximum
Basis Of Presentation [Line Items]
Debt instrument covenants unencumbered liquid assets											$ 3,000,000
SWK Loan \| Credit Agreement Fifth Amendment
Basis Of Presentation [Line Items]
Proceeds from Offering					$ 6,900,000
SWK Loan \| Credit Agreement Fifth Amendment \| Subsequent Event
Basis Of Presentation [Line Items]
Warrants issued to purchase shares of common stock			2,500
Exercise price of warrants			$ 0.40
Gross proceeds from warrant exercises			$ 18,000,000
SWK Loan \| Credit Agreement Fifth Amendment \| Series F Preferred Stock \| Subsequent Event
Basis Of Presentation [Line Items]
Preferred stock public offering			18,000
Preferred stock par value			$ 0.001
SWK Loan \| Credit Agreement Fifth Amendment \| Minimum [Member]
Basis Of Presentation [Line Items]
Principal amount										10,000,000					10,000,000			10,000,000
Debt instrument covenants unencumbered liquid assets										3,000,000					3,000,000			3,000,000	$ 1,500,000
Net revenue																		41,000,000
Debt instrument amount										10,000,000					$ 10,000,000			$ 10,000,000
EBIDTA target										$ 7,000,000	$ 7,000,000	$ 7,000,000	$ 7,000,000
SWK Loan \| Credit Agreement, Second Amendment [Member]
Basis Of Presentation [Line Items]
Proceeds from Offering					$ 6,900,000
Warrants issued to purchase shares of common stock			2,500
Exercise price of warrants			$ 0.40
Gross proceeds from warrant exercises			$ 18,000,000
Payments of equity offering costs			$ 2,200,000
SWK Loan \| Credit Agreement, Second Amendment [Member] \| Series F Preferred Stock
Basis Of Presentation [Line Items]
Preferred stock public offering			18,000
Preferred stock par value			$ 0.001
SWK Loan \| Credit Agreement, Second Amendment [Member] \| SWKWarrantsMember
Basis Of Presentation [Line Items]
Warrants issued to purchase shares of common stock																			63,779
Exercise price of warrants																			$ 0.39198
Warrants outstanding																			487,198
Warrants outstanding, Exercise Price																			$ 0.39198
SWK Loan \| Credit Agreement, Second Amendment [Member] \| Minimum [Member]
Basis Of Presentation [Line Items]
Gross proceeds from subordinated debt threshold limit		$ 10,000,000															$ 5,000,000
SWK Loan \| Credit Agreement Sixth Amendment \| Subsequent Event
Basis Of Presentation [Line Items]
Note maturity date	May 09, 2024
Debt Instrument, date of interest only period	2022-05
Repayment of the principal amount	$ 700,000