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

Quarterly report pursuant to Section 13 or 15(d)

Debt - Additional Information (Detail)

Debt - Additional Information (Detail)												1 Months Ended						3 Months Ended		6 Months Ended		9 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Jul. 31, 2020 USD ($)	Jul. 22, 2020 USD ($) $ / shares shares	Jun. 10, 2020 USD ($)	Jun. 08, 2020 USD ($)	May 22, 2020 USD ($)	May 14, 2020 USD ($)	Apr. 14, 2020 USD ($)	Oct. 28, 2019 USD ($)	May 07, 2019 USD ($)	Nov. 09, 2018 USD ($) Day $ / shares shares	Sep. 27, 2018 USD ($) $ / shares	Aug. 31, 2020 $ / shares	Jul. 31, 2020 USD ($)	Jun. 30, 2020 USD ($) $ / shares	Mar. 31, 2020 USD ($) $ / shares shares	Nov. 30, 2019 $ / shares	Oct. 31, 2019 $ / shares	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) $ / shares	May 15, 2020 USD ($) $ / shares shares	Apr. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 31, 2019 $ / shares	Mar. 31, 2019 USD ($)	Mar. 06, 2018 USD ($) $ / shares
Debt Instrument [Line Items]
Proceeds from issuance of equity securities			$ 6,900,000
Borrowings on credit facility																				$ 3,000,000
Debt issuance costs																				50,000
Common stock, par value $0.001 per share; 180,000 and 40,000 shares authorized, 50,387 and 31,439 shares issued and 50,342 and 31,439 outstanding as of June 30, 2020 and December 31, 2019, respectively														$ 50,000				$ 50,000		50,000			$ 50,000			$ 31,000
EBITDA target																		(3,979,000)	$ (3,337,000)	(9,330,000)	$ (7,702,000)
Proceeds from Offering			$ 6,900,000
Non current term loans														$ 3,140,000				$ 3,140,000		$ 3,140,000			$ 3,140,000
Warrants adjusted exercise price \| $ / shares																		$ 0.60
SWKWarrantsMember
Debt Instrument [Line Items]
Warrants adjusted strike price \| $ / shares															$ 0.49	$ 1.00	$ 1.00
Warrants issued to purchase shares of common stock \| shares										372,023					487,198
Exercise price of warrants \| $ / shares										$ 1.34					$ 0.39198
Warrants expire date										Nov. 09, 2026
Number of trading days of average closing price of common stock \| Day										10
Warrants expiration period										8 years
Warrants fair value assumptions, expected volatility rate										81.79%
Warrants fair value assumptions annual dividend per share \| $ / shares										$ 0.00
Warrants fair value assumptions, risk-free interest rate										3.13%
Warrants, estimated fair value										$ 400,000					$ 100,000
Additional Warrants issued to purchase shares of common stock \| shares															63,779
DPG Warrants
Debt Instrument [Line Items]
Finder's fee										$ 400,000
Warrants issued to purchase shares of common stock \| shares										279,851
Exercise price of warrants \| $ / shares										$ 1.34
Warrants expire date										Nov. 09, 2026
Number of trading days of average closing price of common stock \| Day										10
Warrants expiration period										8 years
Warrants fair value assumptions, expected volatility rate										81.79%
Warrants fair value assumptions annual dividend per share \| $ / shares										$ 0.00
Warrants fair value assumptions, risk-free interest rate										3.13%
Warrants, estimated fair value										$ 300,000
Adjusted exercise price of warrants \| $ / shares														$ 0.62
DPG Warrants \| Scenario Forecast
Debt Instrument [Line Items]
Adjusted exercise price of warrants \| $ / shares												$ 0.38
DPG Warrants \| Warrants Issued on November 9, 2018
Debt Instrument [Line Items]
Exercise price of warrants \| $ / shares										$ 1.34				0.8767				0.8767		$ 0.8767			$ 0.8767
DPG Warrants \| Warrants Issued on May, 2019
Debt Instrument [Line Items]
Exercise price of warrants \| $ / shares														$ 1.4197				$ 1.4197		$ 1.4197			$ 1.4197				$ 2.17
Original Western Alliance Warrant
Debt Instrument [Line Items]
Exercise price of warrants \| $ / shares																													$ 2.35
Western Alliance Warrant
Debt Instrument [Line Items]
Exercise price of warrants \| $ / shares											$ 2.13
Warrants expire date											Sep. 27, 2028
SWK Warrants and DPG Warrants
Debt Instrument [Line Items]
Warrants effective-interest method amortization period																				5 years
Credit Agreement First Amendment \| SWKWarrantsMember
Debt Instrument [Line Items]
Additional warrants to purchase common stock value									$ 200,000
Credit Agreement First Amendment \| DPG Warrants
Debt Instrument [Line Items]
Additional warrants to purchase common stock value									100,000
Additional finders fee									100,000
Paycheck Protection Program
Debt Instrument [Line Items]
Non current term loans														$ 3,000,000				$ 3,000,000		$ 3,000,000			$ 3,000,000
EIDL Loan
Debt Instrument [Line Items]
Note interest rate per annum					3.75%
Loan principal amount					$ 150,000
Periodic payment amount					$ 731
Frequency of periodic payment					installment payments, including principal and interest, are due monthly beginning twelve months from the date of the EIDL Loan
Loan balance payment terms					The balance of principal and interest is payable thirty years from the date of the promissory note.
Subsequent Event
Debt Instrument [Line Items]
Proceeds from issuance of equity securities		$ 15,800,000
Warrants issued to purchase shares of common stock \| shares		45,000,000
Maximum \| Original Western Alliance Warrant
Debt Instrument [Line Items]
Warrants issued to purchase shares of common stock equal value																													$ 120,000
Maximum \| Western Alliance Warrant
Debt Instrument [Line Items]
Warrants issued to purchase shares of common stock equal value											$ 120,000
Pacific Mercantile Bank \| Credit Agreement First Amendment
Debt Instrument [Line Items]
Unrestricted cash required to be deposited with lenders														$ 1,500,000				1,500,000		$ 1,500,000			$ 1,500,000
Pacific Mercantile Bank \| Paycheck Protection Program
Debt Instrument [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 \| Subsequent Event \| Credit Agreement First Amendment
Debt Instrument [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
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																												$ 12,500,000
Repayments of loan										$ 700,000
Line of credit facility term										5 years
Borrowings on credit facility										$ 12,500,000
Debt instrument, repayment of interest-only on loan period										2 years
Debt instrument, principal repayments beginning term										2021
Debt instrument, maturity term										2023
Debt instrument covenant description																				(i) maintain unencumbered liquid assets of (A) no less than $1.5 million or (B) the sum of aggregate cash flow from operations less capital expenditures, (ii) achieve certain revenue and EBITDA levels during the first two years of the loan, (iii) limit future borrowing, investments and dividends, and (iv) submit monthly and quarterly financial reporting.
Debt issuance costs										$ 1,000,000
Loan origination fee										200,000
Finder's fee										400,000
Legal and other fees										$ 400,000
Interest expense																		$ 600,000	$ 500,000	$ 1,200,000	$ 1,000,000
Weighted-average interest rate														12.25%				12.25%		12.25%			12.25%
SWK Loan \| LIBOR
Debt Instrument [Line Items]
Line of credit facility interest rate description																				London Interbank Bank Offered Rate (“LIBOR”) plus 10% or another index that approximates LIBOR as close as possible if and when LIBOR no longer exists.
Line of credit facility bearing floating interest rate per annum										10.00%
SWK Loan \| Credit Agreement First Amendment
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									15,000,000
Debt instrument covenant description																				(a) adjust minimum revenue and EBITDA levels, (b) require the Company to have a shelf registration statement declared effective by the Securities and Exchange Commission before September 30, 2019, with a proposed maximum aggregate offering price of at least $10.0 million if the Company did not reach set minimum revenue levels for the three-month period ended September 30, 2019, and (c) require minimum liquidity of $1.5 million at all times. The First Amendment provided that if aggregate minimum revenue and EBITDA levels were not achieved by September 30, 2019, the minimum liquidity requirement would be increased to $3.0 million, until the Company has obtained additional equity or debt funding of no less than $5.0 million.
Minimum level of liquidity financial covenant									1,500,000
Additional equity or debt funding requirement until minimum liquidity is met									5,000,000																	5,000,000
Maximum aggregate offering price									10,000,000
Increase in minimum liquidity requirement if aggregate minimum revenue and EBITDA levels are not achieved									3,000,000
Financial covenant additional borrowings																										2,500,000
Loan origination and other fees to be paid									$ 100,000
SWK Loan \| Credit Agreement, Second Amendment [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity																						$ 5,000,000
Proceeds from Offering				$ 6,900,000
Warrants issued to purchase shares of common stock \| shares		2,500
Exercise price of warrants \| $ / shares		$ 0.40
Gross proceeds from warrant exercises		$ 18,000,000
SWK Loan \| Credit Agreement, Second Amendment [Member] \| Series F Preferred Stock
Debt Instrument [Line Items]
Preferred stock public offering \| shares		18,000
Preferred stock par value \| $ / shares		$ 0.001
SWK Loan \| Credit Agreement, Second Amendment [Member] \| SWKWarrantsMember
Debt Instrument [Line Items]
Warrants issued to purchase shares of common stock \| shares																								63,779
Exercise price of warrants \| $ / shares																								$ 0.39198
SWK Loan \| Credit Agreement Fifth Amendment
Debt Instrument [Line Items]
Proceeds from Offering				6,900,000
SWK Loan \| Subsequent Event \| Credit Agreement Fifth Amendment
Debt Instrument [Line Items]
Warrants issued to purchase shares of common stock \| shares		2,500
Exercise price of warrants \| $ / shares		$ 0.40
Gross proceeds from warrant exercises		$ 18,000,000
SWK Loan \| Subsequent Event \| Credit Agreement Fifth Amendment \| Series F Preferred Stock
Debt Instrument [Line Items]
Preferred stock public offering \| shares		18,000
Preferred stock par value \| $ / shares		$ 0.001
SWK Loan \| Maximum
Debt Instrument [Line Items]
Debt instrument covenants unencumbered liquid assets										$ 1,500,000
SWK Loan \| Maximum \| Credit Agreement Fifth Amendment
Debt Instrument [Line Items]
Subordinated debt issued				$ 10,000,000										$ 10,000,000				$ 10,000,000		$ 10,000,000			$ 10,000,000
SWK Loan \| Minimum [Member] \| Credit Agreement, Second Amendment [Member]
Debt Instrument [Line Items]
Gross proceeds from subordinated debt threshold limit	$ 10,000,000																					$ 5,000,000
SWK Loan \| Minimum [Member] \| Credit Agreement Fifth Amendment
Debt Instrument [Line Items]
Debt instrument covenants unencumbered liquid assets														3,000,000				3,000,000		3,000,000			3,000,000	$ 1,500,000
Revenue target																							41,000,000
EBITDA target																							7,000,000
Western Alliance \| Business Financing Agreement
Debt Instrument [Line Items]
Repayments of loan										$ 900,000
Loan Agreement \| Pacific Mercantile Bank
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity								$ 3,000,000
Maximum borrowing base percentage of eligible accounts								90.00%
Maximum borrowing base percentage of eligible inventory								75.00%
Line of credit facility expiration date								Oct. 28, 2021
Interest rate								1.50%
Line of credit, outstanding borrowings														0				0		0			0			0
Line of credit facility, unused availability														$ 1,000,000				1,000,000		$ 1,000,000			$ 1,000,000			$ 2,700,000
Loan Agreement \| Pacific Mercantile Bank \| Maximum
Debt Instrument [Line Items]
Interest rate								6.00%
Loan Agreement \| Exim Bank
Debt Instrument [Line Items]
Line of credit facility expiration date								Oct. 28, 2020
Annual fee								$ 52,500
Termination fee								$ 30,000
Revolving Credit Facility \| Pacific Mercantile Bank
Debt Instrument [Line Items]
Line of credit facility description																				In April, 2020, the Company drew $3.0 million under the PMB Loan and repaid the balance in full during the second quarter. Interest incurred on the loan was not material. In May 2020 it was determined that the Company was not in compliance with the minimum unrestricted cash requirement under the PMB Loan’s existing covenants as of March 31, 2020. In July, 2020, the Company obtained a waiver for the covenant violation and entered into the First Amendment to the Loan and Security Agreement (the “First Amendment”)
Line of credit, outstanding borrowings																									$ 3,000,000
Repayments of loan																		$ 3,000,000