Note 13 - Significant Concentrations - Rebate Credits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Cost of Sales [Member]
Reductions	$ 311	$ 757
Selling and Marketing Expense [Member]
Reductions	$ 373	$ 1,115

The amount of expense offset under the rebates program.

No definition available.

Name:	bsqr_ExpenseOffsetUnderRebatesProgram
Namespace Prefix:	bsqr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration