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Note 14 - Segment Reporting (Details Textual) - Heavy Fabrications [Member] | 3 Months Ended
--- | ---
Mar. 31, 2022 MWh
Number of Facilities | 2
Number of Tower Sections in Production Capacity of Turbines Total | 1,650
Maximum [Member] |
Annual Tower Production Capacity | 550
Minimum [Member] |
Power Generating Capacity of Turbines (Megawatt-Hour) | 1,100

X
- Definition Approximate number of wind towers that can be produced annually. + References No definition available. + Details
Name: | bwen_AnnualTowerProductionCapacity
Namespace Prefix: | bwen_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of facilities of the entity. + References No definition available. + Details
Name: | bwen_NumberOfFacilities
Namespace Prefix: | bwen_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the aggregate power-generating capacity of turbines in the Entity. + References No definition available. + Details
Name: | bwen_NumberOfTowerSectionsInProductionCapacityOfTurbinesTotal
Namespace Prefix: | bwen_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the aggregate power-generating capacity of turbines for which the entity has the annual capacity to produce wind towers. + References No definition available. + Details
Name: | bwen_PowerGeneratingCapacityOfTurbines
Namespace Prefix: | bwen_
Data Type: | dtr-types:energyItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=bwen_HeavyFabricationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |