Note 9 - Significant Risk Concentrations - Rebate Credits (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Cost of Sales [Member]
Reductions	$ 2	$ 26	$ 232	$ 236
Selling and Marketing Expense [Member]
Reductions	$ 95	$ 110	$ 269	$ 287

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