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

Consolidated Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 2,164	$ 2,154	$ 4,017
Charges (Reversals) to Cost or Expenses	(2,034)	(12)	(202)
Deductions	114	22	(1,661)
Balance at End of Year	244	2,164	2,154
Allowance for sales returns
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	262	262	262
Charges (Reversals) to Cost or Expenses	0	0	0
Deductions	0	0	0
Balance at End of Year	262	262	262
Allowance for tax valuation
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	31,235	27,261	21,743
Charges (Reversals) to Cost or Expenses	(24)	(4)	5,518
Deductions	4,595	3,978	0
Balance at End of Year	$ 35,806	$ 31,235	$ 27,261