Consolidated Statements Of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Statement Of Stockholders Equity [Abstract]
Convertible preferred stock and warrants, issuance cost	$ 251	$ 480

Convertible preferred stock and warrants issuance cost.

No definition available.

Name:	biol_ConvertiblePreferredStockAndWarrantsIssuanceCost
Namespace Prefix:	biol_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration