XML 141 R121.htm IDEA: XBRL DOCUMENT v3.22.0.1

Supplemental disclosure of cash flow information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash Flow Statement [Abstract]
Compensatory shares	$ 704	$ 647

X

- Definition

Cash Flow Statement [Abstract]

+ References

No definition available.

+ Details

Name:	bldp_CashFlowStatementAbstract
Namespace Prefix:	bldp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Noncash, compensatory shares

+ References

No definition available.

+ Details

Name:	bldp_Noncashcompensatoryshares
Namespace Prefix:	bldp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration