BIOLASE, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Subsequent Events (unaudited) - Additional Information (Detail)

Subsequent Events (unaudited) - Additional Information (Detail) - USD ($)						12 Months Ended
	Mar. 06, 2018	Jan. 26, 2018	Jan. 25, 2018	Feb. 06, 2017	Feb. 26, 2016	Dec. 31, 2017	Dec. 31, 2016
Stock Options \| Employees
Subsequent Event [Line Items]
Stock options granted				611,000
Awards valued per share				$ 1.55
Options expiration period				10 years
Options vesting description						Vesting periods for options is ratably over the 36-month period, commencing on February 25, 2018.
Restricted Stock Units (RSUs)
Subsequent Event [Line Items]
Awards valued per share				$ 1.55
Granted				80,000		2,351,000	907,000
Restricted Stock Units (RSUs) \| President And Chief Executive Officer
Subsequent Event [Line Items]
Awards valued per share				$ 1.55	$ 0.86
Options vesting description						(i) one-quarter of the RSUs vest on February 6, 2019, (ii) one-eighth of the RSUs vest on February 6, 2020, (iii) one-eighth of the RSUs vest on February 6, 2021, and (iv) one-half of the RSUs vest upon the achievement of specific interim and annual Company performance criteria.
Granted				1,000,000	59,523
Subsequent Event \| Stock Options \| Employees
Subsequent Event [Line Items]
Stock options granted			1,800,000
Awards valued per share			$ 0.42
Options expiration period			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			36 months
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date			Feb. 25, 2018
Subsequent Event \| Restricted Stock Units (RSUs) \| President And Chief Executive Officer
Subsequent Event [Line Items]
Awards valued per share		$ 0.40
Granted		200,000
Subsequent Event \| Western Alliance Warrant
Subsequent Event [Line Items]
Price per share of unregistered shares of common stock	$ 0.47
Warrant expiration date	Mar. 06, 2028
Subsequent Event \| Maximum \| Western Alliance Warrant
Subsequent Event [Line Items]
Number of warrants to purchase aggregate unregistered shares of common stock	120,000
Business Financing Agreement \| Subsequent Event
Subsequent Event [Line Items]
Borrowings relating to eligible accounts receivable	$ 6,000,000
Line of credit facility expiration date	Mar. 06, 2020
Line of credit facility, interest rate description	Amounts outstanding under the Business Financing Agreement bear interest at a per annum floating rate equal to the greater of 4.5% or the “Prime Rate” published in the Money Rates section of the Western Edition of The Wall Street Journal (or such other rate of interest publicly announced from time to time by Western Alliance as its “Prime Rate”), plus 1.5% with respect to advances made under the line of credit, plus an additional 5.0% during any period that an event of default has occurred and is continuing.
Business Financing Agreement \| Domestic Revolving Credit Facility \| Subsequent Event
Subsequent Event [Line Items]
Borrowings relating to eligible accounts receivable	$ 6,000,000
Maximum borrowing base percentage of eligible accounts receivable	75.00%
Line of credit facility commitment fee percentage	0.25%
Business Financing Agreement \| Export Revolving Credit Facility \| Subsequent Event
Subsequent Event [Line Items]
Borrowings relating to eligible accounts receivable	$ 3,000,000
Maximum borrowing base percentage of eligible accounts receivable	85.00%
Line of credit facility commitment fee percentage	1.75%
Business Financing Agreement \| Line of Credit \| Subsequent Event
Subsequent Event [Line Items]
Variable interest Rate with respect to advances made	1.50%
Line of credit facility interest rate during period in event of default	5.00%
Business Financing Agreement \| Line of Credit \| Subsequent Event \| Minimum [Member]
Subsequent Event [Line Items]
Line of credit facility bearing floating interest rate per annum	4.50%