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Note 11 - Share-based Compensation - Share-based Compensation Expense (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share-based compensation expense	$ 192	$ 219
Basic earnings per share (in dollars per share)	$ 0.01	$ 0.01
Diluted earnings per share (in dollars per share)	$ 0.01	$ 0.01
Cost of Sales [Member]
Share-based compensation expense	$ 24	$ 26
Selling, General and Administrative Expenses [Member]
Share-based compensation expense	$ 168	$ 193

X

- Definition

Represents the reduction in basic earnings per share related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	bwen_
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Period Type:	duration

X

- Definition

Represents the reduction in diluted earnings per share related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	bwen_
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X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Details

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